PSLE The figure is formed by joining two quarter circles of radius 18 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 18
= 36 cm
Circumference of the quarter circle
=
14 x 3.14 x 36
= 28.26 cm
Circumference of 2 quarter circles
= 2 x 28.26
= 56.52 cm
Perimeter of the figure
= 56.52 + 4 x 18 - 2 x 5
= 56.52 + 72 - 10
= 118.52
≈ 119 cm
Answer(s): 119 cm