mohon di bantu plisssss

Bab Lingkaran
Matematika SD Kelas V

a] r = d/2 = 14/2 = 7 cm
luas = 1/2 x π x r²
luas = 1/2 x 22/7 x 7 x 7
luas = 77 cm²

b] luas = 1/4 x π x r²
luas = 1/4 x 3,14 x 6 x 6
luas = 28,26 cm²

a. r = 14/2 = 7 cm

Luas = 1/2 x phi x r xr
= 1/2 x 22/7 x 7 x 7
= 77 cm2

b . r = 6 cm
Luas = 1/4 x phi x r x r
= 1/4 x 3,14 x 6 x 6
= 28,26 cm2