Luas bangun berikut adalah pakai cara

L1 = p × l
= 17 × (7 + 7)
= 17 × 14
= 238 cm²

L2 = p × l
= (30 - 17) × 7
= 13 × 7
= 91 cm²

L3 = ½ × π × r²
= ½ × 22/7 × 7 × 7
= 77 cm²

Luas bangun
L = (L1 + L2) - L3
= (238 + 91) - 77
= 329 - 77
= 252 cm² (A)