Matematika

Pertanyaan

luas lingkaran disamping...cm²
A.346,5
B.693
C.1.039,5
D.1.386
luas lingkaran disamping...cm² A.346,5 B.693 C.1.039,5 D.1.386

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1 Jawaban

  • Dik : d= 21 cm
    Dit : L?
    Jawab :
    L= 1/4 πd²
    =1/4 ×22/7 ×21²
    =1/4 ×22/7 ×441
    =9702/28
    =346,5 cm (A)

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