Question

Sebuah lingkaran berdiameter 7cm2 berapakah keliling lingkaran

Answer 1

= Luas Alas x
= Phi x R x R
= 22/7 x 7 x7
= 22 x 7
= 154

Answer 2

D = 7
r = ½ × d = ½ × 7 = 3,5
keliling lingkaran = 2 π r
= 2 × 22/7 × 3,5
= 7 × 22/7
= 22 cm²
semoga dapat membantu