Question

In the following circle of radius 4 cm, find

length of the arc AB.​

Answer 1

Answer:

hope it is helpful for you

Answer 2

Answer:

ᴀ᭄ɴsᴡᴇʀ

Area of sector OAPB =

πr^2θ/360πr2θ/360

= 22/7 \: \times \: 10 \times 10 \times 90/360=22/7×10×10×90/360

550/7550/7

Area of major sector = area of circle - area of sector OAPB

=πr^2−550 /7=πr2−550 /7

=22 /7×10×10−550 /7=22 /7×10×10−550 /7

=2200 /7−550 /7=2200 /7−550 /7

=1650 /7 \: cm^2=1650 /7cm2

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