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strojnjashka [21]

3 years ago

7

The length of a rectangle is twice its width.The perimeter of the rectangle is 30cm.Calculate the area of the rectangle.

1 answer:

hammer [34]3 years ago

5 0

Answer:

Step-by-step explanation:

Let width be w.

Length is 2w.

Therefore:

2w + 2w + w + w = 30 cm

6w = 30 cm

w = 5 cm.

Width = 5 cm

Length = 5 * 2 = 10 cm

Area = length * width = 10 * 5 = 50 cm2

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Answer:

12 1/3

Step-by-step exp

First, you need to add up 11/4 and

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3 years ago

A cube has a lateral area of 676 square feet.<br> What is the side length of the cube?

sp2606 [1]

Answer:

13 ft.

Step-by-step explanation:

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It can be seen seen from the attached figure as well.

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So, Lateral surface area is nothing but 4 $\times$ area of a square.

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Darya [45]

Answer:

$w = 9 \text{ inches}\\l = 13\text{ inches}\\h = 3\text{ inches}$

Step-by-step explanation:

We are given the following in the question:

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Let x inches be the width of cake.

Width of cake, w =

$x\text{ inches}$

Then, length of cake,l =

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Putting values, we get:

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3 years ago