Question

Vito buys a twin mattress that is 39 inches wide and 75 inches long. He wants to buy a quilt to cover the top of the mattress. Which expression can he use to find the area of the top of the mattress?

39 + 75
2(39) + 2(75)
39 × 75
39(75) + 39(75)

Answer 1

Answer:b 2(39) +2(75)

Explanation:

Because there are four corners of a mattress your going to take the length and width of the mattress and multiply each time to then add them to get the exact size your needing

Answer 2

39 × 75

Explanation:

Since, the shape of the twin mattress is rectangular,

Given,

The length of the mattress = 75 inches,

Width of the mattress = 39 inches,

Now, the the area of the top of the mattress( which is covered by the quilt) = Area of the mattress

We know that,

The Area of a rectangle = Length × Width

Hence, the area of the top of the mattress = 75 × 39

= 39 × 75

Third option is correct.