The width of a rectangle is 3 4 the length. the perimeter is 252 cm. what is the width of the rectangle?

If the area of a rectangle is 252 mm2 and the length is 21 mm, what is the width of the base? 
Hint: plug the Area and length into the formula and solve for W. 

12 mm 
 
2.) What is the area of a square with a side of 9 cm? 

81 cm2 
... 
3.) Emma is going to help her mom replace the baseboards all the way around the bottom of the walls in their living room. If the room is seven and four-fifths feet by five and two-thirds feet, and the material she is interested in using costs $2.49 per foot, how much will it cost to buy the new baseboard material? 

$67.06 
 
4.) If the area of a rectangle is 507 mm2 and the width is 13 mm, what is the length of the base? (This is like #1.) 
39 mm 
 
5.) What is the perimeter of a parallelogram with bases of 15 cm, side length 37 cm, and height 29 cm? 

104 cm 

 
6.) If the length of a rectangle is 9 1/2 cm and the area is 80 3/4 cm2, what is the width of the rectangle? 

8 1/2 cm 
 
7.) What is the height of a triangle with base 1 1/2 m and area 9/20 m2? 

3/5 m 
 
8.) What is the base of a triangle with height 8 m and area 20 m2? 

5 m 
 
9.) A section of Nathan's bedroom wall is three hundred thirty-seven centimeters long and one hundred ninety-three centimeters tall. How many square meters of wallpaper will it take to cover that section? Round your answer to the nearest square meter. 
Remember, there are 100 cm in one meter 

7 square meters 
 
10.) For a trapezoid: 
height = 9 cm 
base 1 = 28 cm 
base 2 = 14 cm 
area =  

189 cm2 
 
11.) If the width of a rectangle is 2 1/2 mm and the length is 1 4/5 mm, what is the area of the rectangle? 

4 1/2 mm 2 
 
12.) If the width of a rectangle is 7 3/4 m and the length is 5 1/2 m, what is the perimeter of the rectangle? 

26 1/2 m 
 
13.) If the length of a rectangle is 5 1/3 cm and the width is 9 1/2 cm, what is the area of the rectangle? 

50 2/3 cm2 
 
14.) For #14 and #15, find the circumference of each circle. Use 3.14 for pi and round your answer to the nearest hundredth. 
radius = 10.14 m 

63.68 m 
 
15.) 
diameter = 8 cm 

25.12 cm

If the length of the rectangle is 34 cm, then the width is 92 cm.

If the width is 34 cm, then the length is 92 cm.