Sunday
December 21, 2014

Homework Help: gr10 math

Posted by Rebecca on Tuesday, May 31, 2011 at 11:08am.

The length of a rectangle is 2cm more than the width. The area is 24cm^2. What are the dimensions of the rectangle?

Let x be the width.
Let x +2 be the the length.
A = lw
24cm^2 = (x+2)x
24cm^2= x^2 + 2x
24cm^2 + x^2 = 2x
25cm^2 = 2x
25cm^2 /2 = 2x /2
12.5cm^2 = x
l = x + 2
l = 12.5 cm^2 + 2
l = 14.5 cm^2
Therefore the dimensions of the rectangle are 12.5cm^2 and 14.5cm^2.
did i do this question right?

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

math - a rectangle is twice as long as it is wide. if both of its dimensions are...
algebra - The length of a rectangle is 3 more than twice the width. The area of ...
MATH - THE LENGTH OF A RECTANGLE IS 3M MORE THAN 2 TIMES ITS WIDTH. IF THE AREA ...
math - the dimensions of a rectangle are such that its length is 3 inches more ...
math - the length of a rectangle is 5 ft more than twice the width. a)if x ...
math - the length of a rectangle is 3 yds more than twice it width and the area ...
algebra , help - Can someone help me set up the equations thanks. Directions: ...
Quadratic Equation - The dimensions of a rectangle are such that its length is 3...
algebra - the dimensions of a rectangle are such that its length is 5 in more ...
math - The length of a rectangle is 2 inches longer than the width. The area of ...

Search
Members