PSLE The figure is formed by joining three quarter circles of radius 21 cm. Find the perimeter of the figure. Round your answer to the nearest whole number. Take π = 3.14
Diameter of the quarter circle
= 2 x 21
= 42 cm
Circumference of the quarter circle
=
14 x 3.14 x 42
= 32.97 cm
Circumference of 3 quarter circles
= 3 x 32.97
= 98.91 cm
Perimeter of the figure
= 98.91 + 6 x 21 - 4 x 6
= 98.91 + 126 - 24
= 200.91
≈ 201 cm
Answer(s): 201 cm