Question

find the surface area of a sphere of radius is 10.5 cm and 5.6 cm and 14 cm ​

Answer 1

Heya✌️

Answer:

Surface area of sphere with radius 10.5,

=4πr2

=4×22/7×10.5×10.5

=9702/7

Surface area with radius 5.6cm,

=4πr2

=4×22/7×5.6×5.6

=2759.68/7

=394.24

Surface area with radius 14cm,

=4πr2

=4×22/7×14×14

=17248/7

=2464.

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Answer 2

Step-by-step explanation:

radius of surface area in the following

10.5cm , 5.6cm , 14cm

$surface \: area \: of \: sphere \: = 4\pi {r}^{2} \\ \\ = 4 \times \frac{22}{7} \times {10.5}^{2} \\ \\ 4 \times \frac{22}{7} \times 10.5 \times 10.5 \\ \\ 4 \times 22 \times 1.5 \times 10.5 \\ \\ = 1386 {cm}^{2} \\ \\ radius \: = 5.6 \\ \\ surface \: area \: of \: sphere \: = 4\pi {r}^{2} \\ \\ = 4 \times \frac{22}{7} \times {5.6}^{2} \\ \\ = 4 \times \frac{22}{7} \times 5.6 \times 5.6 \\ \\ = 4 \times 22 \times 0.8 \times 5.6 \\ \\ = 394.24 {cm}^{2} \\ \\ radius = 14cm \\ \\ surface \: area \: of \: sphere \: = 4\pi {r}^{2} \\ \\ = 4 \times \frac{22}{7} \times {14}^{2} \\ \\ = 4 \times \frac{22}{7} \times 14 \times 14 \\ \\ = 4 \times 22 \times 2 \times 14 \\ \\ = 2464 {cm}^{2}$