A rectangle has dimensions of 3a by 5b. How do you write simplified expressions for the area and perimeter of this rectangle?

1 Answer
EZ as pi
Jul 1, 2016

area = 15ab and Perimeter = 6a+10b

Explanation:

Write expressions for the area and perimeter using the variables, in exactly the same way as with numbers. However, it is not possible to get a final numerical answer.

Area = l xx b " " Area = 3a xx 5b = 15ab

Perimeter is the sum of all the sides of a shape.

Perimeter = l +b+l+b

P = 3a+5b+3a+5b =6a+10b

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