Bantu bang muehehheehehehe​

Jawaban:

Luas 1/4 lingkaran = 1/4πr^2 = 1/4 x 22/7 x 7 x 7 = 154/4 = 38,5 cm^2

Keliling 1/4 lingkaran = 1/4 x 2πr = 1/4 x 2 x 22/7 x 7 = 44/4 = 11 cm