Question

plz answer this word sum?

Answer 1

Area of park excluding waterbed = area of park - area of water bed
= (15*12) - (3.14*5*5)
= (180) - (78.5)
= 101.5 sq.meter

Cost of fencing = (perimeter of bed) * rate of fencing
=
$(2\pi \: r) \times 60$
=
$(2 \times 3.14 \times 5) \times 60$
=
$31.4 \times 60$
=₹ 1884