Question

in PQR, PQ = 16 cm, Q = 90 and QR = 12 cm. Find the radius of the semicircle described on diameter PR and the area
$\pi \: = \: 3.14$
of the figure​

Answer 1

hope it helps

Step-by-step explanation:

Area of circle with QR as diameter =2π(52)=225π cm2

Area of semi circle with diameter PR

=2π(42)=8π cm2

Area of semi circle with PQ diameter 

=2π(32)=29π cm2

Area of triangle PQR=21×6×8=24 cm2

Area of shaded regions

=(8π+29π+24)−(225π)=12.5π+24−12.5π=24 cm2