Question

Find the area of the sector of a circle of radius 8 cm and arc with length 15 cm.

Answer 1

Answer is 60 cm² 

Solution ::

Let centre be O {red dot}

radius=OA=8cm=r

length of arc= 15cm=L

Area of sector=\({1\over 2}\times r\times l\)

= \({1\over 2}\times 8\times 15\)

= \(120\over 2\)

=60 cm².