Question

What will be cost for painting the circular roof of a building of radius 4•2m at the rate of RS.25 per ​

Answer 1

Answer:

radius = 4.2m

to find = area of circular roof

area of circle =

$\pi {r}^{2}$

22/7 * 4.2 * 4.2

=55.44 m sq

area per sq m = ₹25 (unit is not mentioned , q is incomplete so assuming the unit metre )

55.44 * 25

= ₹1381

Answer 2

Step-by-step explanation:

circular's area = πr2

so 3.14*4.2=55.3896

each rate is 25 so, = Rs. 1,218.5712