Circle
55
1. Find the area of shaded portion if radius of circle is 35 mm Mm
and mZPOQ = 72°
cm.
1) 720 sq.mm.2) 770 sq.mm.
4) 550 sq.mm.
3) 350 sq.mm.
Answers
Answered by
0
Answer:
770
Step-by-step explanation:
⇒ Here, r=35cm and θ=72
o
[ Given ]
⇒ Length of an arc =
360
o
θ
(2πr)
Where, θ is angle subtended at a center.
2πr is circumference of a circle.
⇒ Length of an arc =
360
o
72
o
×2×
7
22
×35
∴ Length of an arc =44cm
⇒ Area of the sector =
360
o
θ
(πr
2
)
Where, θ is angle subtended at a center.
πr
2
is area of a circle.
⇒ Area of the sector =
360
o
72
o
×
7
22
×(35)
2
∴ Area of the sector =770cm
2
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