Question

find the radius of sphere whose surface area is 180 cm square​

Answer 1

Answer:

r≈3.78

A Surface area

180

Using the formula

A=4πr2

Solving forr

r=1

2A

π=1

2·180

π≈3.7847

Answer 2

Answer:

r = 3 . 78

1. Surface Area of sphere = 4 pi r²
2. 180 = 4 × 22 / 7 × r ²
3. 180 = 88 / 7 × r ²
4. 180 ×7/88 = r ²
5. root 180 × 7 / 88 = r
6. r = 3 . 78