Question

When making a book cover, Anwar adds an additional 20 square inches to the surface area to allow for overlap. How many square inches of paper will Anwar use to make a book cover for a book 11 inches long, 8 inches wide, and 1 inch high?

Answer 1

234 square inches

Explanation:

We are given that

Length of book, l=11 in

Width of book, w=8 in

Height of book, h=1in

Additional area required to overlap=20 square inches

We have to find how many square inches of paper to make cover of one book.

We know that surface area of cuboid

`S=2(lb+bh+hl)`

Using the formula

Surface area of book

`S=2(11* 8+8* 1+1* 11)`

`S=214 in^2`

Total paper used to make cover of one book

=Surface area of book +additional surface area

=
`214+20`

`=234in^2`

Hence, Anwar will use paper to make cover of one book=234 square inches