Question

the surface area of a sphere is 1386 cm^2 .Its volume is

Answer 1

surface area of sphere=1386 cm²
4πr² =1386
4×22/7×r²=1386
r²=1386×7/22×4
r²=441/4
r=21/2=10.5 cm
Volume of sphere = 4/3πr³
=4/3×22/7×10.5×10.5×10.5
=237699 cm³

Answer 2

Answer:4851cu.cm

Step-by-step explanation:

surface area of sphere=1386 cm²

4πr² =1386

4×22/7×r²=1386

r²=1386×7/22×4

r²=441/4

r=21/2

volume of sphere=4/3×22/7×21/2×21/2×21/2

=33×147

=4851cu.cm