L.Setengah lingkaran
= 1/2 * 22/7 * 10.5 * 10,5 *4
= 11 * 1,5 * 10,5 *4
= 173,25 * 4
= 693 cm^2
L. persegi
= 21^2
= 441 cm^2
L.Total
= 693 cm^2 + 441 cm^2
= 1.134 cm^2
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L.Setengah lingkaran
= 1/2 * 22/7 * 10.5 * 10,5 *4
= 11 * 1,5 * 10,5 *4
= 173,25 * 4
= 693 cm^2
L. persegi
= 21^2
= 441 cm^2
L.Total
= 693 cm^2 + 441 cm^2
= 1.134 cm^2