Question

A fountain is circular in shape. its radius is 3.5m. A pavement is constructed around it .width of the pavement is 7m. find the expenditure incurred on the fixing tiles on the pavement at the rate of Rs .50 per square metre

Answer 1

Step-by-step explanation:

The radius of fountain,r = 3.5m

The width of payment,s = 7m

→area of fountain = π r^2

= π x 3.5^2

= 38.6 sq m.

→area of pavement with fountain = s^2

= 7^2

= 49 sq m

→Actual area of pavement = 49-38.6

=10.4 sq m.

→ Total cost of pavement = 50 x 10.4

= Rs .520...

Hope you understood