Question

find the area of each shape correct to 1d.p

Answer 1

Area of rectangle=l×b
=4×3=12cm²

Area of semi circle=πr²/2
radius will be 2 cm
=22/7×2×2/2
=22/7×2
=6.28cm²

Area of shape =area of rectangle+area of semi circle
=(12+6.28)cm²
=18.28cm²

Answer 2

Length of rect. = 3 cm
breadth of rect. = 4 cm
Area = l×b
= 3×4= 12cm^2
Diameter of semi- circle= 4 cm
Radius= 2 cm
Area= 1/22pi r^2
= 6.28 cm^2
Area of shape = 12+6.28 =18.28 cm^2