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100 = 4s
100 : 4 = s
25 = s
d1 = 40 cm
d2?
mari kita cari
2√25²-(40:2)²
2√25²-20²
2√625-400
2√225
2(15)
=30 cm
sehingga d1=40 cm, d2 = 30 cm
L = d1 x d2 x 1/2
L = 40 x 30 x 1/2
L = 40 X 15
L = 600 cm²
d2= 2(√25²-20²)
= 2*15 cm
= 30 cm
luas= 1/2 x d1 x d2
= 1/2 x 40 cm x 30 cm
= 600 cm²