Luas bangun datar tersebut...cm²
A. 64
B. 74
C. 80
D.100
A. 64
B. 74
C. 80
D.100
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1/2x6x8+1/2x10x10=74
L1 = a . t/2
= 8 . 6/2
=24 cm²
alas segitiga
=√8² +6²
=√64 +36
=√100
=10 cm
luas segitiga 2
=a . t/2
=10 . 10 /2
=100/2
=50 cm²
lugab
=24+50
=74 cm²