Find the area and perimeter of a rectangle if the length is (x+7) and the width is (x+3).

l = (x + 3)

b = (x + 7)

Area:

= I x b

= (x + 3)(x + 7)

= x(x + 7) + 3(x + 7)

= x² + 7x + 3x + 21

= x² + 10x + 21

Perimeter:

= 2(l + b)

= 2((x + 3) + (x + 7)) = 2(2x + 10)

= 2(x + 3 + x + 7)

= 4x + 20

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step-by-step explanation:

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a² + b²= c²

24² + 7² = c²

c= 25