Question

A rectangular lawn is 40 feet by 50 feet. How wide a uniform strip has been mowed around

the edge if 3/10 of the lawn has not yet been mowed?

Answer 1

To find the width of the uniform strip that has been mowed around the edge of the rectangular lawn, calculate the area of the entire lawn, subtract the area that has not been mowed, and divide the remaining area by the length of the lawn. The width of the uniform strip is 28 feet.

Step-by-step explanation:

To find the width of the uniform strip that has been mowed around the edge of the rectangular lawn, we need to calculate the area of the entire lawn, subtract the area that has not been mowed, and then divide the remaining area by the length of the lawn.

The total area of the lawn is 40 feet * 50 feet = 2000 square feet.

If 3/10 of the lawn has not been mowed, then 7/10 of the lawn has been mowed.

Therefore, the area that has been mowed is (7/10) * 2000 = 1400 square feet.

The width of the uniform strip that has been mowed around the edge is therefore (1400 square feet) / (50 feet) = 28 feet.

Answer 2

The width of the strip is 28 ft

Step-by-step explanation:

First lest us calculate the area of the rectangle

given that

length= 50ft

width= 40 ft

Area = length *width

Area= 50*40

Areaa= 2000 ft^2

given that 3/10 of the lawn is yet to be mowed

(3/10)*2000

0.3*2000= 600ft^2

Therefore the area that has been mowed is 2000-600= 1400 ft^2

1400 ft^2

since the direction of the mower is along the lenght of the lawn

area= lenght*width

1400= 50*width

width= 1400/50

width= 28 ft