Question

if the radius of a sphere is doubled then the volume is increased by what percentage
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Answer 1

Answer:

Given that radius of the sphere is doubled.

Let the Initial volume of sphere V=

3

4

πr

3

Incresed volume V

′

=

3

4

π(2r)

3

=8V

Thus, Volume is increased by:

V

8V−V

×100=700%

Answer 2

Step-by-step explanation:

Al-Idrisi is best known in the West as a geographer, who made a globe of silver sphere weighing 400 kilograms for King Roger II of Sicily. Some scholars regard him as the greatest geographer and cartographer of the Middle Ages. He also made original contributions in medicinal plants.

Profession: Geographer

Died: 1166 C.E