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maka r = 10 cm
* luas persegi
= s xs
= 60 x 60
= 3600
*luas 1 lingkaran kecil
= πr²
= 3,14 x 10 x 10
= 314
maka luas 9 lingkaran kecil
= 9 x 314
= 2826
*luas daerah yang diarsir
= luas persegi - luas 9 lingkaran kecil
= 3600 - 2826
=774 cm²