MEDIUM
10th West Bengal Board
IMPORTANT
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How much brass is required to make a hemispherical bowl of diameter 1.4 decimeter in sq.decimeter?

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Important Questions on Sphere

MEDIUM
10th West Bengal Board
IMPORTANT
SCHOOL MATHEMATICS Class 10>Chapter 21 - Sphere>EXERCISE 3>Q 3
How much iron is required in cc to make a solid iron hemisphere of diameter 21 cm? [Take π=227]
MEDIUM
10th West Bengal Board
IMPORTANT
SCHOOL MATHEMATICS Class 10>Chapter 21 - Sphere>EXERCISE 3>Q 3
The volume of a solid hemisphere is 144π cc. What is its diameter in cm?
MEDIUM
10th West Bengal Board
IMPORTANT
SCHOOL MATHEMATICS Class 10>Chapter 21 - Sphere>EXERCISE 3>Q 3
What is the ratio of whole surface of a solid sphere and a solid hemisphere of the same diameter?
MEDIUM
10th West Bengal Board
IMPORTANT
SCHOOL MATHEMATICS Class 10>Chapter 21 - Sphere>EXERCISE 3>Q 7
Three solid spheres of radii 3 cm, 4 cm, 5 cm are melted to form a large solid sphere. Find the radius and surface area of the large sphere.
HARD
10th West Bengal Board
IMPORTANT
SCHOOL MATHEMATICS Class 10>Chapter 21 - Sphere>EXERCISE 3>Q 7
By melting a lead sphere of diameter 12 cm, three small spheres are formed. If the ratio of the diameter of the small spheres be 3:4:5, find the radius of each small sphere.
MEDIUM
10th West Bengal Board
IMPORTANT
SCHOOL MATHEMATICS Class 10>Chapter 21 - Sphere>EXERCISE 3>Q 7
By melting a solid sphere of radius 9 cm, three solid spheres are formed, of which the radius of the first two are 1 cm and 6 cm. Find the radius of the third sphere in cm.
MEDIUM
10th West Bengal Board
IMPORTANT
SCHOOL MATHEMATICS Class 10>Chapter 21 - Sphere>EXERCISE 3>Q 5
The diameter of a solid lead sphere is 14 cm. By melting this sphere how many spheres of radius 3.5 cm can be formed?
HARD
10th West Bengal Board
IMPORTANT
SCHOOL MATHEMATICS Class 10>Chapter 21 - Sphere>EXERCISE 3>Q 6

From a metal made hemisphere of radius 2 cm, a maximum spherical part is cut off. Find the price in ₹ of the remaining part of metal if the price of 1 cc of metal is ₹7.

(Round off the answer to next whole number)