Answer:
1. A = l x w
= 15 cm x 9 cm
= 135 cm²
2. A= s2
= (14cm)²
= 196 cm²
3. A= (b1 + b2 / 2) x h
= (7 cm + 12 cm /2) x 9cm
= (19 cm / 2) x 9cm
= 9.5cm x 9cm
= 85.5cm²
4. A= b x h / 2
= 20cm x 15cm / 2
= 300 cm²/ 2
= 150 cm²
5. A=bxh
= 13m x 10m
130m²
