luas persegi = 40 x 20 = 800m²
luas 1/2 lingkaran = 1/2 x 3,14 x 20² = 628cm²
luas lingkaran = 2x1/2 x 3,14 x 20² = 1256cm²
luas arsir
= 800 - 628 + 1256
= 1428cm²
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luas persegi = 40 x 20 = 800m²
luas 1/2 lingkaran = 1/2 x 3,14 x 20² = 628cm²
luas lingkaran = 2x1/2 x 3,14 x 20² = 1256cm²
luas arsir
= 800 - 628 + 1256
= 1428cm²