Question

23.If each side of a cube is doubled ,then its volume

(a) is doubled
(b) 4times
(c) 6times
(d) none of these

Q24The lateral surface area of a cylinder is
(a)∏ rh
(b) 2∏rh
(c) r/2h∏
(d) none of these

Q25.If the volume and the surface area of a sphere are equal then its radius is
(a) 1unit (b) 2 units (c) 3 units 4 units​

Answer 1

Answer:

Q23. None of these (the correct answer is 8.)

Q24. Option B is correct!!

Q25. 4 units

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

23.

a=2a then

volume of cube= a³

then (2a)³=8a³

8times

24. b 2πrh

25.4πr²=4/3πr³

r=3units