Find the perimeter of a semicircle whose diameter is 14 cm.
A
21 cm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
22 cm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
36 cm
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
44 cm
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is C 36 cm
radius = r = diameter2 = 142 = 7 cm Perimeter of semicircle = length of arc APB(semicircular) + AB = half of circumference + diameter = 12×(2πr) + d = πr + d = 227×7 + 14 = 22 + 14 = 36 cm