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The equation is and cm.

Step-by-step explanation:

Step 1:

The perimeter of a rectangle is given by twice the sum of its length and its width.

The length of the given rectangle cm.

The width of the given rectangle cm.

The perimeter of the given rectangle

The perimeter of the rectangle is given as 19 cm.

Step 2:

By substituting the known values, we get

This is the equation.

So cm.

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.

(8+64)^2= 5184 < answer

step-by-step explanation:

2^3 = 8

4^3= 64

(8+64)^2 = 5184