Arectangle has an area of 7.1m2(squared). one of the sides is 0.1m in length. work out the perimeter of the rectangle.

L = length = unknown

W = width = 0.1 meters

A = area = 7.1 square meters

Use the formula for an area of a rectangle. Isolate L

A = L*W

7.1 = L*0.1

0.1*L = 7.1

L = 7.1/0.1

L = 71

The rectangle has a length of 71 meters and a width of 0.1 meters (which multiply to an area of 7.1 square meters)

Now use the perimeter formula

P = 2*(L+W)

P = 2*(71+0.1)

P = 2*71.1

P = 142.2

Or you can add up the four sides 71, 71, 0.1, 0.1 and you'll get the same answer.

let's solve your equation step-by-step.

4x+2=2x+12

step 1: subtract 2x from both sides.

4x+2−2x=2x+12−2x

2x+2=12

step 2: subtract 2 from both sides.

2x+2−2=12−2

2x=10

step 3: divide both sides by 2.

2x

2

=

10

2

x=5

step-by-step explanation: