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88 cm = 2 . . r
. r = = 44 cm
r = 44 x
r = 14 cm
Luas lingkaran = π . r²
= . 14²
= . 196
= 616 cm² (B)
88 = 2 x 22 x r
7
r = √ 88 : 44
7
= √ 88 x 7
44
= 14cm
L = π x r²
= 22 x 14 x 14
7
= 616cm²