Question

a circular grassy plot of land 70 m in diameter has a path 7 M wide running around it on the outside find the cost of gravelling the path at rs 4per sq meter (take pictures = 3.14

Answer 1

Answer:

Step-by-step explanation:

in this question we will first find the area of the bigger circle with radius 77 and then the area of smaller circle with radius 70 and substract the area of smaller circle from this bigger circle aur answer will come

Answer 2

The cost of gravelling the path is Rs.6776

Step-by-step explanation:

Diameter of grassy plot = 70 m

Radius of grassy plot =$\frac{70}{2}= 35 m$

We are given that a circular grassy plot has a path 7 M wide running around it on the outside

Outer radius = 35 m + 7 m= 42 m

Area of path = Outer area - inner area

Area of path =$\pi R^2 - \pi r^2$

Area of path = $\frac{22}{7}(42^2-35^2)$

Area of path = 1694 sq.m.

Cost of graveling 1 sq.m. = Rs.4

Cost of graveling 1694 sq.m. = $4 \times 1694=Rs.6776$

Hence  the cost of gravelling the path is Rs.6776

#Learn more:

A circular grassy plot of land diameter 42m has a path of wide 3.5m running around it on the outside Find the cost of gravelling the path at 4rs per square meter

https://brainly.in/question/7049643