The length of a rectangle is 3 times its width. Its perimeter is 88 cm. Find the length and
2 answers:
Answer:
The rectangle is 11cm by 33cm long
Step-by-step explanation:
The easiest way to solve this is in a diagram, and that is how I'll explain the answer.
If you have a rectangle, where the length is 3 times the width, you can label the sides as x, and as 3x.
Now there are 2 sides labeled as 3x, and 2 sides labeled as x.
Since we are dealing with the perimeter of the rectangle, add all the values together to get 8x. since this value also represents the perimeter, we can set it equal to 88.
We then divide both sides by 8, to get x=11.
Then, plug in the value of x to each side,
So the width was x, and now is 11, and the length was 3x, and now is 33
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Answer:
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Step-by-step explanation:
<u><em>The correct question is</em></u>
The diagram shows the net of a juice box. the box is a rectangular prism. what is the surface area of the juice box? 6.4 cm 4 cm 10.5 cm
we know that
The surface area of a rectangular prism is equal to
where
B is the area of the base
P is the perimeter of the base
H is the height of the prism
we have
<em>Find the area of the base B</em>
substitute the given values
<em>Find the perimeter of the base P</em>
substitute the given values
<em>Find the surface area</em>
substitute