1.
.
A= 8*5
convert meter to cm
1 meter is equal to 100 cm
A= 800×500
=4×10⁵
2. A = s²
A= 5 ×5
A = 25
3 A= 1/2 lxw
A= 1/2 3×8
24÷ 2 = 12
A = 12
