Question

Hobi mows two lawns. The first lawn is 7 feet long and 3 feet wide.

The area of the second lawn is 4 times as big but has the same
width as the first.
What is the length of the second lawn?

Answer 1

28 feet long

Explanation:

we find the area of the first lawn using recent angle formula (l)(w)=a

(7)(3)

21

Now we multiply this by 4 since the second lawn is four times it

21x4

84

Now we rearrange the rectangle area formula to where length is what we are trying to find

a=(l)(w)

/w. /w

a/w=l

Now we fill in this formula

84/3=a

28

Hopes this helps