Dzakwaan
Luas Bangun = Luas Persegi Panjang - Luas ½ Lingkaran = ( P x L ) - ( ½ x 22/7 x r x r ) = ( 7 x 10 ) - (11/7 x 7/2 x 7/2) = 70 - ( 11 x 7/4 ) = 70 - ( 77/4 ) = 70 - 19,25 = 50,75 Cm²
0 votes Thanks 0
nik10
Luas gabungan = (panjang*lebar) - (1/2 dari 1 lingkaran)
= ( P x L ) - ( ½ x 22/7 x r x r )
= ( 7 x 10 ) - (11/7 x 7/2 x 7/2)
= 70 - ( 11 x 7/4 )
= 70 - ( 77/4 )
= 70 - 19,25
= 50,75 Cm²
= (panjang*lebar) - (1/2 dari 1 lingkaran)