Question

Find the radius of an arc of radius 3m which subtends an angleof 45° at the center of the circle

Answer 1

$\bf\large\underline\pink{Solution:-}$

Given:

Area of minor sector, A=77 cm

2

Angle subtended by sector, θ=45

o

To find: Radius r

Area of minor sector subtending angle of θ

o

at center of a circle of radius r is given by A=

360

θ

×πr

2

Substituting values, we get:

77=

360

45

×πr

2

r≈

45×22/7

77×360

∵π≈22/7

r=14 cm

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Answer 2

Answer

Step-by-step explanation: