Question

plz solve step by step.
the diameter of 1 rs coin is 35 mm
find the area of one of its flat faces

Answer 1

Given.
Diameter of the 1Rs coin=35mm
→radius=35/2 mm

So the area =πr²
=
$\frac{22}{7} \times \frac{35}{2} \times \frac{35}{2} \\ = \frac{11 \times 5 \times 35}{2} \\ = \frac{1925}{2} \\ = 962.5$
=962.5mm²

Hope it helps...
Regards,
Leukonov.