Question

Find the surface area of a sphere with the following radii.
(a) 21 cm
(b) 14 cm
(c) 2.8
(d)5.6

Answer 1

Answer:

a) 5541.77

b)2463.01

c)98.53

d)394.08

Answer 2

Step-by-step explanation:

surface area of sphere is 4 pie r^2.

1.4×22/7×21×21 = 5544 cm^2

2.4×22/7×14×14 = 2464 cm^2

3.4×22/7×2.8×2.8 = 98.56 cm^2

4.4×22/7×5.6×5.6 = 394.24 cm^2