Question

Sebuah bola luasnya 1256 cm2, maka volumenya adalah...

Answer 1

L = 4πr²
1256 = 4 × 3,14 × r²
1256 : 4 = 3,14× r²
314 = 314/100 × r²
314 × 100 = 314r²
31400 / 314 = r²
100 = r²
r = √100
r = 10


V = 4/3 × π × r³
V = 4/3 × 3,14 × 10³
V = 4/3 × 314/100 × 1000
V = 4/3 × 3140
V = 12560/3
V = 4186,67



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