8.r=24cm
L=π×r²
=3,14×24×24=1,808.64cm²
9.r=42cm
=22/7×42×42=154cm²
10.r=π×r²
L=3,14×38×38=4,534.16cm²
#maaf kalau salah :D
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8.r=24cm
L=π×r²
=3,14×24×24=1,808.64cm²
9.r=42cm
L=π×r²
=22/7×42×42=154cm²
10.r=π×r²
L=3,14×38×38=4,534.16cm²
#maaf kalau salah :D