Question

A cow is tethered to a peg with 7m long rope at the corner of a 35m long and 20m wide rectangular grass field, what area of the field will the cow graze ?

Answer 1

Answer:

$38.5 m ^2$  

Step-by-step explanation:

Given :A cow is tethered to a peg with 7 m long rope at the corner of a 35 m long and 20 m wide rectangular grass field,

To Find:  What area of the field will the cow graze ?

Solution:

The grazing area is the quarter of the circle of radius of 7 m.

Area of the quarter of the circle = $\frac{1}{4} \pi r^2$

                                                      = $\frac{1}{4} \times \frac{22}{7} \times  7^2$  

                                                      = $38.5 m ^2$  

Hence the cow graze $38.5 m ^2$  area of the field

Answer 2

Answer:

38.5

Step-by-step explanation:

area of circle 22/7*r^2

corner of rectangle 1/4*22/7*(7)^2

=38.5