Question

Hayo siapa bisa jawab ^.^

1.

Answer 1

Diketahui :
L = 504 cm²
= 24 cm

Ditanya :
?

Jawab :
L = × ×
504 = × 24 ×
504 = 12
= 42 cm (D)

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Diketahui :
Lp = 3.768 cm²
r = 20 cm

Ditanya :
t?

Jawab :
Lp = 2 × π × r × (r + t)
3.768 = 2 × 3,14 × 20 × (20 + t)
3.768 = 125,6 × (20 + t)
30 = 20 + t
t = 10 cm (A)