Homework Help: math

Posted by ES on Saturday, March 16, 2013 at 2:42pm.

Camern is wrapping a present. She does not want any left over wrapping paper. How much wrapping paper does she need to buy. The length of the box is 15in,
the width is 3in and the height in 7 in.
I did it this way.
front and back(height)
SA=lw*2
SA=15(7)2
SA=210in squared
Sides( width)= SA=lw*2
SA=3(7)2= 42 in squared
Top and bottom(length
SA=15(3)2
SA=90in squared

Total surface areais SA=210=42=90=342in squared
He must buy 342 in squared of wrapping paper
Did I do all the steps correctly.
Thanks

math - Henry, Sunday, March 17, 2013 at 12:53pm
As = 2(W*h + L*h + L*W)
As = 2(21 + 105 + 45) = 2(171)=342 in^2=
Surface area.

Answer this Question

Related Questions

math - andy is wrapping a present to give to his mother which is in the shape of...
math - Rodney need 3/4 of a roll of wrapping paper to wrap 5 gifts. How much ...
workin in a pharmacy - when wrapping a normal purchase,the pharmacy assistant ...
geometry - Alexa has 200 square inches of wrapping paper left. Which is the side...
math - find the smallest rectangular area of wrapping paper that can be used to ...
Math - Monique and her family decorated their house for the holidays.The ...
Math - Monique and her family decorated their house for the holidays.The ...
math - Jan says if you double each of the dimensions of a rectangular box, it ...
Math - An upscale department offers its customers free gift wrapping on any day ...
algebra - we have a cube shaped box with a volume of 125 cubic centimeters. what...

For Further Reading

First Name:
School Subject:
Answer: