1.

What is radius of cylinder of height 20cm formed by melting sphere of radius 15 cm​

Answer»

Step-by-step EXPLANATION:

VOLUME of cylinder = Volume of sphere

π×r^2×h = 4×π×r^3/3

r^2×20 = 4×15^3/3 (π CUT down from both sides)

r^2 = 4×15×15×15/3×20

r^2 = 13500/60

r^2 = 225

r = √225

r = 15

Hence, radius of cylinder is 15 cm.


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