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Marianna [84]
3 years ago
8

The length is 12 cm more than its width . Find the area of the rectangle if it's perimeter is 100 cm

Mathematics
1 answer:
DaniilM [7]3 years ago
6 0
Let's say the width is (x) and the width is (x+12). The formula for a perimeter of a rectangle equals 2w + 2l, which would then for this problem be 100=2(x) + 2(x+12) which would distribute as 2x + 2x + 12 which equals 4x+12. When you subtract twelve from 100 you get 88=4x. Divide 88 by 4 and you get x=22. This then would mean the width is 22 and the length is 34. The formula for an area of a rectangle is w*l. Plug in the numbers that you figure out from the area formula and you get 22x34=748
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Use a calculator to approximate the measure of the acute angle A to the nearest tenth of a degree. sin A = 0.7793
Aleksandr [31]

The measure of acute angle A to the nearest tenth of a degree is 51.2°

<h3>Measure of angles</h3>

From the given information, we are to determine the measure of the angle.

The angle we are to determine its measure is acute angle A

From the given information, we have that

sin A = 0.7793

Thus,

A = sin⁻¹(0.7793)

Using calculator

A = 51.1965°

A ≅ 51.2°

Hence, the measure of acute angle A to the nearest tenth of a degree is 51.2°

Learn more on Calculating measure of angles here: brainly.com/question/9171516

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7 0
1 year ago
How u can convert decimal to a fraction in .23?
Vlada [557]

23

%

=

23

100

=

0.23

First we have to think that the symbol

%

=

1

100

so that

23

%

=

23

⋅

(

1

100

)

this is read twenty three percent is equal to twenty three multiplied by one divided by one hundred.

the result is the fraction

23

100

Now, to convert to decimal, simply divide 23 by 100

23

÷

10

=

2.3


and

2.3

÷

10

=

0.23

this is the same as

23

÷

100

=

0.23

4 0
3 years ago
Can someone plz help me? :(
azamat

Answer:

add 6 Cubes to the other side

Step-by-step explanation:

Since there are 3 cubes on one pan

and nine on the other you would need to

subtract 9-3

6 cubes to make them balance!

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2 years ago
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Norma-Jean [14]

Answer:

Step-by-step explanation:

7 0
3 years ago
A baby gains 11 pounds in its first year of life. The baby gained 45 pounds during the first four months and 3 pounds in
kifflom [539]

Answer:

4 pound is the right answer

Mark me as a brilliant

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2 years ago
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