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$7.02.01 Different terms related to fractions #Math #NCERT #CBSE Class VII Ch:2 fractions$

1) Olympiad . . . . 2 equilateral triangle. Find pink triangle area. #ClassIX #circles

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1) Olympiad . . . . 2 equilateral triangle. Find pink triangle area. #ClassIX #circles

26) A heap of wheat is in the form of a cone whose diameter is 10.5m & height is 3m. Find its volume

25) If the triangle ABC in the Q. 7 above is revolved about the side 5cm, then find volume of solid.

24) A right triangle ABC with sides 5cm, 12cm & 13cm is revolved about the side 12cm. Find volume

23) The volume of a right circular cone is 9856 cm3. If diameter of base is 28 cm, find ht of cone

22) A conical pit of top diameter 3.5 m is 12 m deep. What is its capacity in kilolitres?

21) If the volume of a right circular cone of height 9 cm is 48 π cm3, find the diameter of its base

20) The height of a cone is 15 cm. If its volume is 1570 cm3, find radius of the base.(Use π = 3.14)

19) Find the capacity in litres of a conical vessel with (i) Radius 7cm, Slant ht 25cm (ii) Ht 12cm

18) Find volume of the right circular cone with (i) radius 6cm, height 7cm (ii) rad 3.5cm, ht 12cm

09.11.06 NCERT Ex:11.3 Solution (volume of cone) #Class IX - Ch:11 Surface area &volume

10.14.04 Probability - Three dice are thrown - 6 Qs #Class X #Math #Ch:14

10.14.03 Probability - Two dice are thrown - 12 Qs #Class X #Math #Ch:14

17) A right circular cylinder just encloses a sphere of radius r. Find(i) surface area of sphere,

16) A hemispherical bowl is made of steel, 0.25 cm thick. Inner radius of bowl is 5 cm. Find outer

15) The diameter of the moon is approximately one fourth of the diameter of the earth. Find ratio

14) Find the radius of a sphere whose surface area is 154 cm2. #Class IX #surfaceareaandvolume

13) A hemispherical bowl made of brass has inner diameter 10.5 cm. Find the cost of tin-plating it

12) Radius of spherical balloon increases from 7cm to 14cm as air is being pumped in it. Find ratio

11) Find the total surface area of a hemisphere of radius 10cm. #surfaceareaandvolume

10) Find the surface area of a sphere of diameter: (i) 14cm (ii) 21cm (iii) 3.5m. #Class IX

9) Find the surface area of a sphere of radius: (i) 10.5 cm (ii) 5.6 cm (iii) 14 cm #Class IX

10.14.02 Probability - Single dice is thrown - 10 Qs #Class X #Math #Ch:14

09.11.04 NCERT Ex:11.2 Solution #Class IX - Ch:11 Surface area and volume

8) A bus stop is barricaded from remaining part of road, by using 50 hollow cones made of recycled.

6) The slant height and base diameter of a conical tomb are 25m and 14m respectively. Find the cost

7) A joker’s cap is in form of a right circular cone of base radius 7cm & height 24cm. Find area of

5) What length of tarpaulin 3m wide will be reqd to make conical tent of height 8m &base radius 6m?

4) A conical tent is 10 m high and the radius of its base is 24 m. Find (i) slant height of tent.

3) Curved surface area of a cone is 308 cm2 & its slant height is 14 cm. Find (i) radius of the base

2) Find the total surface area of a cone, if its slant height is 21m & diameter of its baseis 24 m.

1) Diameter of base of a cone is 10.5 cm and its slant height is 10 cm. Find its curved Surface area

09.11.03 NCERT Ex:11.1 solution #Class IX #Math Ch:11 Surface area and volume

21) ABC is an isosceles triangle with AB = AC. Draw AP ⊥ BC to show that ∠B = ∠C. #Class IX #Math

19) Two sides AB and BC and median AM of one triangle ABC are respectively equal to sides PQ and QR

20) BE and CF are two equal altitudes of a triangle ABC. Using RHS congruence rule, prove that the

18) AD is an altitude of an isosceles triangle ABC in which AB = AC. Show that (i) AD bisects BC

17) ΔABC and ΔDBC are two isosceles triangles on same base BC & vertices A & D are on same side BC

16) Show that the angles of an equilateral triangle are 60° each. Ex:7.2 #Class IX #Math #CBSE

13) ABC and DBC are two isosceles triangles on same base BC (see Fig. 7.33). Show that ∠ABD = ∠ACD.

09.07.05 NCERT Ex: 7.3 solution #Class IX #Math #CBSE Ch:7 Triangles

15) ABC is a right angled triangle in which ∠A = 90°and AB = AC. Find ∠B and ∠C. Ex:7.2 #ClassIX

14) ΔABC is an isosceles triangle in which AB = AC. Side BA is produced to D such that AD = AB.

2) Olympiad Qs - Find area of green rectangle. #ClassVIII #Math #CBSE Ch:10 Mensuration

12) ABC is a triangle in which altitudes BE & CF to sides AC & AB are equal (see Fig. 7.32). Show

11) ABC is isosceles triangle in which altitudes BE & CF are drawn to equal sides AC & AB respective

10) In ΔABC, AD is perpendicular bisector of BC (Fig. 7.30). Show that ΔABC is isosceles triangle

9) In an isosceles triangle ABC, with AB = AC, bisectors of ∠B & ∠C intersect each other at O.

1) Olympiad Qs. Find area of Square divided in 6 equal part. #ClassVIII #Math Ch:10 Mensuration

1) Olympiad Qs - find sum of all angles. (5x5 square) #ClassVIII #Math #CBSE Ch:3 Understanding

09.07.04 NCERT Ex 7.2 solution #Class IX #Math #CBSE Ch:7 Triangles

7) AB is line segment & P is its mid-point. D and E are pts on same side of AB such that ∠BAD = ∠ABE

6) In Fig. 7.21, AC = AE, AB = AD and ∠BAD = ∠EAC. Show that BC = DE. #Class IX #Math Ch:7 Triangles

5) Line l is bisector of angle ∠A & B is point on l. BP & BQ are perpendicular from B to arm of ∠A

4) l & m are parallel lines intersected by another pair of parallel lines p & q. Show ΔABC ≅ ΔCDA.

3) AD and BC are equal perpendiculars to a linesegment AB (see Fig. 7.18). Show that CD bisects AB.

2) ABCD is quadrilateral in which AD = BC & ∠DAB = ∠CBA (see Fig. 7.17). Prove that(i) Δ ABD ≅ Δ BAC

09.07.03 NCERT Ex:7.1 solution #Class IX #Math #CBSE Ch:7 Triangles

8.03.01 Classification of quadrilaterals - Based on side & diagonal Ch:8 Understanding Quadrilateral

08.03.02 Area of quadrilaterals #Class VIII #Math #CBSE

10.10.01 Different parts of circle #Class X #Math #CBSE Ch:10 Circles

08.12.03 factorization using algebraic identity a^2-b^2 = (a+b)(a-b) #Class VIII #Math #CBSE

13) ABC is triangle right angled at C. A line through mid-point M of hypotenuse AB & parallel to BC

12) In a parallelogram ABCD, E and F are mid-points of sides AB & CD respectively (see Fig. 8.22).

11) ABCD is a trapezium in which AB || DC, BD is diagonal & E is mid-point of AD. (Quadrilaterals)

10) ABCD is a rectangle and P, Q, R and S are mid-points of the sides AB, BC, CD & DA respectively.

9) ABCD is a rhombus and P, Q, R and S are mid-points of the sides AB, BC, CD & DA respectively.

8) ABCD is quadrilateral in which P, Q, R & S are mid-point of sides AB, BC, CD & DA(see Fig 8.20).

09.08.07 NCERT Ex:8.2 solutions #Class IX #Math #CBSE Ch:8 Quadrilaterals

7) ABCD is trapezium in which AB || CD & AD = BC (see Fig. 8.14). Show that (i) ∠A = ∠B (ii) ∠C = ∠D

6) ABCD is parallelogram and AP and CQ are perpendiculars from vertices A and C on diagonal BD.

5) In parallelogram ABCD, two points P & Q are taken on diagonal BD such that DP = BQ(see Fig. 8.12)

4) ABCD is a rectangle in which diagonal AC bisects∠ A as well as ∠ C. Show that: (i) ABCD is square

3) Diagonal AC of a parallelogram ABCD bisects∠ A (see Fig. 8.11). Show that(i) it bisects ∠ C also,

2) Show that the diagonals of a square are equal and bisect each other at right angles.

1) If the diagonals of a parallelogram are equal, then show that it is rectangle. Ch:8 Quadrilateral

9.08.04 NCERT Ex:8.1 solution Ch:8 Quadrilaterals #Class IX #Math #NCERT #CBSE