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Crcles : CBSE Math 9 : Ex 9.3 Q1 In Fig., A,B and C are three points on a circle with centre O such that ∠ BOC = 30° and ∠ AOB = 60°. If D is a point on the circle other than the arc ABC, find ∠ADC.

Circles : CBSE 9Math 9 : Chords A circular park of radius 20m is situated in a colony. Three boys Ankur, Syed and David are sitting at equal distance on its boundary each having a toy telephone in his hands to talk each other. Find the length of the string of each phone. Visit website: www.mystudy.in.net

Circles : CBSE Math 9 : Ex 9.2 Q4 If a line intersects two concentric circles (circles with the same centre) with centre O at A, B, C and D, prove that AB = CD

Circles : CBSE Math 9 : Ex 9.2 Q3 If two equal chords of a circle intersect within the circle, prove that the line joining the point of intersection to the centre makes equal angles with the chords.

Circles : CBSE Math 9 : Ex 9.2 Q2 If two equal chords of a circle intersect within the circle, prove that the segments of one chord are equal to corresponding segments of the other chord. Visit website to get complete solution: www.mystudy.in.net Choose CBSE 9 math .

Circles : Chords | CBSE Math 9 : Ex 9.2 Q 1 | Lenght of common chord of 2 intersecting circles. Two circles of radii 5 cm and 3 cm intersect at two points and the distance between their centres is 4 cm. Find the length of the common chord. Visit website: mystudy.in.net/courses/cbse/9/math/viewpage.php?x=09_02

Surface Area of Cone : CBSE Math 9 : Q4 A conical tent is 10 m high and the radius of its base is 24 m. Find (i) slant height of the tent. (ii) cost of the canvas required to make the tent, if the cost of 1 canvas is ₹ 70. Visit website to get more : mystudy.in.net/courses/cbse/9/math/viewpage.php?x=11_01

Surface Area of Cone : CBSE Math 9 : Ex 11.1 Q3 Curved surface area of a cone is 308 cm^2 and its slant height is 14 cm. Find (i) radius of the base and (ii) total surface area of the cone. Visit website to get more : mystudy.in.net/courses/cbse/9/math/viewpage.php?x=11_01

Surface Area of Cone : CBSE std 9 : Ex 11.1 Q2 Find the total surface area of a cone, if its slant height is 21 m and diameter of its base is 24 m. Visit website to get more : mystudy.in.net/courses/cbse/9/math/viewpage.php?x=11_01

Area of Cone : CBSE Math 9 : Ex 11.1 Q8 A bus stop is barricaded from the remaining part of the road, by using 50 hollow cones made of recycled cardboard. Each cone has a base diameter of 40 cm and height 1 m. If the outer side of each of the cones is to be painted and the cost of painting is Rs. 12 per m^2, what will be the cost of painting all these cones? (Use π = 3.14 and take sqrt(1.04) = ...

Volume of a Cone| CBSE math 9 Q5 A conical pit of top diameter 3.5 m is 12 m deep. What is its capacity in kilolitres? #cbsemathclass9

Volume of a Cone| CBSE math 9 Q4 If the volume of a right circular cone of height 9 cm is 48 π cm^3 , find the diameter of its base. #cbsemathclass9

Volume of a Cone| CBSE math 9| A right triangle ABC with sides 5 cm, 12 cm and 13 cm is revolved about the side 12 cm. Find the volume of the solid so obtained. #cbsemathclass9

Volume of a Cone | CBSE Math 9 | Q3 The height of a cone is 15 cm. If its volume is 1570 cm^3 , find the radius of the base. (Use π = 3.14)

Volume of a Cone | CBSE Math 9 | Q2.b Capacity in litres of a conical vessel h=12 cm, l= 13 cm

Volume of a Cone | CBSE Math 9 | Q2.a Find capacity in litres of conical vessel of r=7 cm, l=25 cm

Volume of a Cone | CBSE Math 9 | Q1b. Volume of the right circular cone of r= 3.5 cm, h= 12 cm?

Volume of a Cone | CBSE Math 9 | Q1a.Find the volume of the right circular cone with r= 6 cm, h=7 cm

Area of Sphere : CBSE Math 9 : Q9. A right circular cylinder just encloses a sphere of radius r .

Area of Sphere : CBSE Math 9 : Q8. Inner radius 5 cm , thickness 0.25cm. Outer surface area?

Area of Sphere : CBSE Math 9 : Q7. Dia of the moon is 1/4 dia of the earth. ratio of surface areas.

Area of Sphere : CBSE Math 9 : Q6. Find the radius of a sphere whose surface area is 154 cm^2.

Area of Sphere : CBSE Math 9 : Q5. A hemispherical bowl inner dia 10.5 cm. cost of tin-plating?

Area of Sphere : CBSE Math 9 : Q4. Radius increases from 7 cm to 14 cm. ratio of surface areas ?

Area of Sphere : CBSE Math 9 : Q3. Find the total surface area of a hemisphere of radius 10 cm.

Area of Sphere : CBSE Math 9 : Q2.3 Surface area of a sphere , given Diameter 3.5 m

Area of a Sphere : CBSE Math 9 : Q2.2 Surface area of a sphere , given Diameter 21 cm

Area of a Sphere : CBSE Math 9 : Q2.1 Surface area of a sphere , given Diameter 14 cm

Area of a Sphere : CBSE Math 9 : Q1.3 Surface area of a sphere , given radius 14 cm