Question

) Δ
A PQR is an equilateral triangle
with side 18 cm. A circle is drawn
on the segment QR as diameter. Find
the length of the arc of this circle within
the triangle
​

Answer 1

Answer:

9.42 cm

Step-by-step explanation:

Join the two ends of the arc inside the triangle with mid point of QR( center of the circle). The angle subtended at the center is 60 degree or pi/3

S=r*theta r=radius=18/2=9

=9*pi/3=3pi=9.42 cm