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The expression 2l + 2w is used to find the perimeter of a rectangle with length l and width w.



What is the perimeter of a rectangle with length 18 cm and width 3 cm?



21 cm


24 cm


42 cm


54 cm

Respuesta :

2 (18cm) + 2 (3cm) = perimeter

36cm + 6cm = P

The answer is 42cm

The perimeter is 42 cm.

Using the expression 2l + 2w, it would be 2(18) + 2(3)

2(18) = 36

2(3) = 6

36 + 6 = 42

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