finding area (good explanation needed )

Question

55x+275 correct ?

just curious because it have the cm2 (squared ) did I miss a step ?

Answer 1

So, the first thing to recognize is that this question is referring to the area of a rectangle. How do we find the area of a rectangle? We multiply the rectangle's length and the rectangle's width. For example: If we were given a rectangle that measured 6 inches by 3 inches:

We multiply 6 x 3 and get an area of 18 inches squared. In this problem, we are given the width of 5cm and the length of x cm, but we are also given the answer for the total area, which is 55 cm².

So, multiply the dimensions of 5 and x: (5 cm x X cm) and set that equal to 55 cm²

5 cm x X cm = 55 cm²

Divide by 5 on both sides to get X by itself.

X = 11 cm, so the dimension of the rectangle are 5 cm by 11 cm, and then the area is 55 cm²

Answer 2

Area = length times width

55 = x times 5

55 = 5x

Can you solve for x and answer?

Answer 3

Problem setup goes like this....

5x=55

x=11cm.

WHy? Area = length x width

Answer 4

If you are trying to solve for x (and it appears you are), then you need to first start with the formula for the area of a rectangle.

1. Area = Length x Width
2. You've been given the Area and the Width, the length is "x" in the diagram
3. 55 = x (5); divide both sides by 5 to isolate the x (length)
4. x = 11 cm

Make sense?