Gracel drew a semicircle of radius 21 cm. Find the perimeter and area of a semicircle. Give your answers correct to 2 decimal places. (Take π = 3.14.)
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Answer:
Step-by-step explanation:
Using the value of C we can determine the formula for the perimeter of a semicircle which is calculated as the sum of half of the circumference of the circle and diameter of a circle. The perimeter of a semicircle formula = (πR + d) or (πR + 2R) units, or R(π + 2).