A.panjang diagonal bidang CH B.luas bidang diagonal CELH

A. 8^2+6^2 = ch^2
64+36 =ch^2
100 = ch^2
Ch =10

a. CH = √8²+6²
CH = √64+36
CH = √100
CH = 10
b. L = pl
L = 10 × 8 = 80cm²
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