All categories

3 years ago

The length of a rectangle is twice its width.

Mathematics

1 answer:

mestny [16]3 years ago

7 0

Answer:

<h3>The answer is 60cm</h3>

Step-by-step explanation:

Perimeter of a rectangle = 2l + 2w

Area of rectangle = l × w

where

l is the length

w is the width

From the question

The length is twice its width is written as

l = 2w

Substitute this into the formula for finding the area of the rectangle

Area = 200 yd²

200 = 2w²

Divide both sides by 2

w² = 100

Find the square root of both sides

width = 10cm

Substitute this value into l = 2w

That's

l = 2(10)

length = 20cm

Perimeter of the rectangle is

2(20) + 2(10)

= 40 + 20

Hope this helps you

You might be interested in

The equation of a circle in general form is x2+y2+20x+12y+15=0 .

Harlamova29_29 [7]

Answer:

$(x +10)^2 + (y+6)^2 = 121$

Step-by-step explanation:

Given equation :

$x^2 + y^2 + 20x +12y + 15 = 0$

Standard equation of circle :

$(x - a)^2 + (y-b)^2 = r^2$

We will consider the x terms in the equation first to find a.

$(x-a)^2 = x^2 - 2ax + a^2$

-2ax = 20x

a = -20x/2x = -10

a = -10

Next consider the y terms to find b.

$(y - b)^2 = y^2 -2by + b^2$

-2by = 12y

b = -12y /2y = -6

b = -6

$(x+10)^2 + (y-6)^2 = x^2 +20x +100 + y^2 +12y + 36$

$=x^2 + y^2 + 20x +12y + 136\\$

But the given equation constant is 15. So find the difference between 136 and 15 to find the radius : 136 - 15 = 121

Therefore, radius = √121 = 11

Equation in standard form :

$(x +10)^2 + (y+6)^2 = 121$

5 0

3 years ago

8th grade geometry HELP PLEASE THIS IS ALREADY LATE AND IS COMPLETELY DUE SOON

dlinn [17]

Answer:

U need to post a pic so I can see ur question

Step-by-step explanation:

4 0

2 years ago

What is the product of 2x + y and 5x – y + 3?

Goryan [66]

Answer:

The product of terms 2x + y and 5x – y + 3 is: $10x^2 + 3xy +6x -y^2 +3y$

Step-by-step explanation:

We need to multiply the two terms

$(2x + y) ( 5x - y + 3)\\=2x (5x - y + 3) + y( 5x - y + 3)\\=10x^2 -2xy +6x +5xy -y^2 +3y\\checking\,\, for \,\, the \,\, like \,\, terms\,\, (\,\,having\,\, same\,\, variables\,\,)\\=10x^2 -2xy +5xy +6x -y^2+3y\\=10x^2 + 3xy +6x -y^2 +3y$

The product of terms 2x + y and 5x – y + 3 is: $10x^2 + 3xy +6x -y^2 +3y$

5 0

3 years ago

Read 2 more answers

after allowing 5 percent discount on the marked price of a radio 10 percent vat is charged on it , then its price became rs 1672

Goryan [66]

Answer:

Hi, there!!!

The solutions in pictures will help you. 

Best of luck....

6 0

3 years ago

Which is the least ...0.105 0.501 0.015 0.15

sergeinik [125]

The least is 0,015

hope this will help you

3 0

3 years ago

Read 2 more answers