Question

The perimeter of a rectangle is 80 cm. If the length is 29 cm, how wide is the rectangle?
A) First write an equation you can use to answer this question. Use w as your variable in the equation.
The equation is
B) Solve your equation in part [A] to find the width of the rectangle.
Answer: The rectangle is
cm wide.

Answer 1

Step-by-step explanation:

A) The equation used to find perimeter is

2L+2W=P

B) Since we know the perimeter is 80 cm and the length is 29 cm, we can make the equation look like this

2(29)+2W=80

Now, we can just solve

58+2w=80

2w=22

w=11 cm

Answer 2

Step-by-step explanation:

1) P= 2(L + W) or 2L + 2W

2) Since the perimeter is given as 80 and the length is given as 29.

P = 2(L + W)

80 = 2( 29 + w)

80= 58 + 2w

collect like terms;

80-58=2w

2w= 22

Divide by what the co- efficient of w

w = 11cm

therefore width is equal to 11cm.

Hope it helps and also u understand :-):-).

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