Question

are central
1 The radius of a sector is 15cm
angle is 60". Find
(i) Length
of the are
i Area of the gertas
in) Perimeters of the sector​

Answer 1

Answer:

i)Arc length=

360°

θ

×2πr=

360°

60°

×2×

7

22

×21=22㎝

Area=

360°

θ

×πr

2

=

360°

60°

×

7

22

×21×21=231㎠

Perimeter=Arc length+2r=22+(2×21)=64㎝