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4 x π x r² = 24 64
4 x 22/7 x r ² = 2464
88/7 x r ² =2464
r² = 2464 x 7/88
r² = 196
r = √196
r = 14 cm
jawabannya adalah 14 cm
Dit : r bola = ... cm
Jawab :
L = 4 π r²
2464 = 4 × 22/7 × r²
2464×7 = 4 × 22 × r²
17248 = 88 × r²
r² = 17248 ÷ 88
r² = 196
r = √196
r = 14
Jadi, jari-jari bola dengan luas permukaan 2464 cm² adalah 14 cm