Ada yg bisa bantu gak??
Tolong donk
Rumus luas lingkaran
l = 1/4 x phi x d²
l = ph x r²
jawaban nomer 1
a. ) l = 1/4 x 3,14 x 8 x 8
= 3,13 x 2 x 8
= 50,24
b.) l = 1/4 x 3,14 x 24 x 24
= 3,14 x 6 x 24
= 452,15
c.) l = 3,14 x 19 x 19
= 1133,54
d.) l = 3,14 x 13 x 13
= 530,66
jawab nomer 2
a.) l = 22/7 x 42 x 42
= 12 x 6 x 42
= 5544
b.) l = 1/2 x 22/7 x 14 x14
= 22 x 7 x 14
= 2156
c.) l = 22/7 x 28 x 28
= 22 x 4 x 28
= 2464
d.) l = 22/7 x 63 x 63
= 22 x 9 x 63
= 12474