Question

find the area of a circular table top whose diameter is 1.4 m. also find cost of polishing the table top at the rate of Rs 10 per m²​

Answer 1

Step-by-step explanation:

Area circle

$area \: circle \\ = \pi {r}^{2} \\ = \frac{22}{7} \times 1.4 \times 1.4 \\ = 21.56 {m}^{2} \\ \\ \\ for \: polishing \\ 1 {m}^{2} = 10rs \\ then \\ 21.56 {m}^{2} = 21.56 \times 10 \\ \: \: \: \: = 215.6rs$