Question

Panjang AB adalah=
Panjang BC =
Panjang CD=

Answer 1

AB = 15 cm   ... sudah diketahui

BD² = AB x BC
20²  = 15 x BC
400 = 15 x BC
 BC = 400/15
       = 26,67

CD² = BD² + BC²
        = 20² + 26,67²
        = 400 + 711,29
        = 1111,29
 CD = √1111,29
        = 33,34 cm