The perimeter of a rectangle is 12 centimeters. The length of a rectangle is 3 centimeters. What is the area of the rectangle

Question

The perimeter of a rectangle is 12 centimeters. The length of a rectangle is 3 centimeters. What is the area of the rectangle

in progress 0
Eliza 6 days 2021-09-12T17:05:12+00:00 2 Answers 0

Answers ( )

    0
    2021-09-12T17:06:16+00:00

    Recall that the equation to find the perimeter of a rectangle is 2(L + w)

    Since we know the length, we can make an equation:

    2(3 + w) = 12

    Divide both sides by 2:
    (3 + w) = 6
    w = 3

    Now that we know both length and width, we simply have to find their product to solve for area:

    a = L * w
    a = 3 * 3
    a = 9

    The area of the rectangle is 9 cm^2.

    0
    2021-09-12T17:06:41+00:00

    This is what we know so far.

    Perimeter: 12cm

    Rectangle Length: 3cm

    Theoretically speaking if one side is 3cm (it’s a rectangle not a square)

    then it cannot be 3cm on all sides because that would be a square.

    If it was 3cm on all sides the area would be 9cm. Because it is a rectangle one side would be 3cm and the other 4cm. (12÷3=4)

    Answer:

    The area is 12 cm.

    Equation: 3 ×. 4 = 12cm

    Formula: length × width

Leave an answer

45:7+7-4:2-5:5*4+35:2 =? ( )