The perimeter of the rectangle is 48 cm and its width is 6 cm. Find the length of this rectangle.

univerkov | September 11, 2021 | education

a =?.

b = 6 cm.

P = 48 cm.

Let us express the length of the rectangle from the formula to determine its perimeter:

If P = 2a + 2b, therefore, a = (P – 2b): 2.

Let’s put the known values from the condition and write the expression:

a = (48 – 2 * 6): 2 = (48 – 12): 2 = 36: 2 = 18 cm.

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