1. Answer : 161m²
= b × h
b = 23m
h = 7m
A = 7 × 23
= 161m²
2. Answer : 64cm²
[tex]( 5.5 + 10.5) \times 8 \times \frac{1}{2} [/tex]
= 16 × 4
= 64cm²
3. Answer : 185cm²
5+5+5=15cm
15×9=135(cm²)
5×5=25(cm²) 25×2=50(cm²)
135+50=185(cm²)
divide it into a rectangle and two square, and then calculate the area separately.
Hope it helps!
