carilah luas banguj berikut!
L = 2 × ( luas alas ) + ( keliling alas ) × tinggi
L = 2 × 1/2 × 10 × 8 + (8 + 10 + 7 ) × 9
L = 2 × 40 + 25 × 9
L = 80 × 225
L = 305 cm²
L = 2 × ( luas alas ) + ( keliling alas ) × tinggi
L = 2 × 1/2 × 10 × 8 + (8 + 10 + 7 ) × 9
L = 2 × 40 + 25 × 9
L = 80 × 225
L = 305 cm²