Mrs. Hernanadez is covering the top of a kitchen shelf that is 26 inches long and 15 inches wide. She incorrectly measures the length to be 25 inches long. How will this error affect her calculations?
a.
It will cause her to overestimate the shelf by about 25 square inches
c.
It will cause her to overestimate the shelf by about 21 square inches
b.
It will cause her to underestimate the shelf by about 25 square inches
d.
It will cause her to underestimate the shelf by about 21 square inches

Question

Mrs. Hernanadez is covering the top of a kitchen shelf that is 26 inches long and 15 inches wide. She incorrectly measures the length to be 25 inches long. How will this error affect her calculations?
a.
It will cause her to overestimate the shelf by about 25 square inches
c.
It will cause her to overestimate the shelf by about 21 square inches
b.
It will cause her to underestimate the shelf by about 25 square inches
d.
It will cause her to underestimate the shelf by about 21 square inches

yttrium · Answer

@terialej , do you have any idea to solve this?

anonymous · Answer

No , i really need help

yttrium · Answer

Do you know the formula of area of a rectangle? You can apply it on this problem. :)

yttrium · Answer

Yoo??

anonymous · Answer

yaa

yttrium · Answer

What you need to do here is to subtract the real area of the shelf and the area of the miscalculated length of 25 inches.