Question

Luas dan Keliling yang diarsir?

Answer 1

Verified answer

Bangun Datar

Diketahui:
AB = 21 cm
r = 21/3 = 7 cm
Ditanya:
L bangun = ?
K bangun = ?

L bangun = L lingkaran
= π r r
= 22/7 x 7 x 7
= 22 x 7
= 154 cm^2

K bangun = K lingkaran + 2r
= 2 π r + 2r
= (2 x 22/7 x 7) + (2 x 7)
= (2 x 22) + 14
= 44 + 14
= 58 cm

*semoga membantu. sukses selalu ^_^