Answer:
20.56 in
Explanation:
The perimeter is the length of the outside of the figure.
This consists of 2 semicircles and 2 straight parts of 4 in
The 2 semicircles can be thought of as 1 circle with circumference
C = 2πr ( r is the radius )
Here diameter = 4 so r = 4 ÷ 2 = 2, then
C = 2 × 3.14 × 2 = 4 × 3.14 = 12.56 in
Thus
perimeter = 12.56 + 4 + 4 = 12.56 + 8 = 20.56 in