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2 years ago

Giving brainily whoever gets it right.

Mathematics

2 answers:

Scilla [17]2 years ago

7 0

Answer:

Step-by-step explanation:

First, let's solve the rectangle.

16 x 7

112

let's go to the triangle now

first 16-8 to find the base

and then 13-7 to find the height

8 and 6

area of a triangle is (height x base)/2

so 24+112 =136

worty [1.4K]2 years ago

6 0

Answer:

136 i believe

Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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2 years ago

the length of a rectangle is four times it’s width. The area of the rectangle is 144 in.². Find the dimensions of the rectangle

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2 years ago

The length of a rectangle is four times its width. If the area of the rectangle is 324m^2, find its perimeter.

Anuta_ua [19.1K]

Answer:

$perimeter=90$

Step-by-step explanation:

We know that the length is four times the width, so:

$l=4w$

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$A=l*w$

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Solve for w. Simplify by removing parentheses:

$324=4w*w\\324=4w^2$

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$\sqrt{81} =\sqrt{w^2} \\\\w=9$

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We know the width. Now find the length by using the area formula and inserting known values:

$324=l*9$

Solve for l. Divide both sides by 9:

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The length of the rectangle is 36. (You can check: 4 times 9 is 36)

Now find the perimeter:

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Step-by-step explanation:

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Answer:

Step-by-step explanation:

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