Question

Which is the best strategy to use to solve this problem?

Sophie wants to make a large rectangular sign that has an area of 60 square feet. She wants to put a border around the sign, but she wants to use as little border material as possible.

What are the dimensions Sophie should use for this sign?

Answer 1

A.
Write a number sentence.

Use a number sentence to calculate the area of a rectangle. Use guess and check to find two numbers that when multiplied will give a product of 60.

B.
Make a list.

Create a list of all possible whole-number combinations of length and width that would equal an area of 60 square feet. Then start calculating the perimeter of each rectangle. Look for a pattern to decrease the number of calculations you have to make.

C.
Use objects to model the problem.

Arrange 60 square tiles in different patterns that create a rectangular shape. Count the number of tiles on the perimeter of each of the shapes.

Answer 2

@Maddy1251

Answer 3

@texaschic101

Answer 4

B is probably the best strategy:
length, width, edge
1, 60, 122
2, 30, 64
3, 20, 46
4, 15, 38
5, 12, 34
6, 10, 32
8, 7.5, 31
10, 6, 32
the best answer with whole numbers will be 6 by 10
the best answer will be
√(60)= 7.74596669
Area = 60
Perimeter = 30.98386677

Does this make sense?

Answer 5

Yes

Answer 6

Maddy do you agree that it's B?

Answer 7

this is K12

Answer 8

Your in K12 ?

Answer 9

yes

Answer 10

me too!!