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4 years ago

A rectangle has an area of 600.6m2. One of the sides is 7.8m in length. Work out the perimeter of the rectangle.

Mathematics

1 answer:

choli [55]4 years ago

5 0

Answer:

P = 169.6 meters

Step-by-step explanation:

A rectangle is a four sided shape with 4 perpendicular angles. It has two pairs of parallel sides which are equal in distance: width and length. Its area, the amount of space inside it, can be found using the formula A = l*w. If the area is 600.6 m² and the length is 7.8m, you can solve for the width by dividing the area by the length. Division is the inverse operation of multiplication and it will isolate the width.

600.6 / 7.8 = 77 inches.

On contrast, the perimeter is the distance around the shape. It si found by adding all sides together in the formula P = 2l + 2w. Substitute l = 7.8 and w =77.

P = 2(7.8) + 2(77)

P = 15.6 + 154

P = 169.6 meters

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What is the diamater of a circle<br> the area of a circle is 144π m^2

nadya68 [22]

Answer:

24 meters

Step-by-step explanation:

The area of a circle can be found using the following formula.

$a=\pi r^2$

We know that the area is 144pi m^2.

$a= 144\pi m^2$

Substitute 144pi m^2 in for a.

$144\pi m^2= \pi r^2$

We want to find the diameter. First, we must find the radius. We have to get the variable, r, by itself.

Divide both sides of the equation by pi.

$144\pi m^2/ \pi = \pi r^2 / \pi$

$144\pi m^2/ \pi = r^2$

$144 m^2= r^2$

The variable, r , is being squared. The inverse of a square is the square root. Take the square root of both sides of the equation.

$\sqrt{144 m^2} =\sqrt{r^2}$

$\sqrt{144 m^2} =r$

$12 m= r$

The radius of the circle is 12 meters, but the question asks for diameter. The diameter is twice the radius.

$d= r*2$

The radius is 12 m.

$d= 12 m*2$

Multiply

$d= 24 m$

The diameter of the circle is 24 meters.

3 0

3 years ago

Question:

andreyandreev [35.5K]

5/2 times x is 5/2x and 5/2 times negative 6 is negative 15 so right now u would have 5/2x - 15 + 1/6 (3-x) then distribute 1/6 into 3 and get 5/2x minus 15 plus 0.5 minus 1/6x then combine all like terms so then it would be 2.666666667x minus 15.5 rounded would be 2.7xminus15.5

5 0

3 years ago

Read 2 more answers

What is the value of 7(10 – 16) + 8 ÷ 2?

Artyom0805 [142]

Answer:

−38

First do 10-16 which is -6

(7)(−6)+8/2

=−42+8/2

8/2 equals 4 so add -42 to 4

=−42+4