Use the formula for the area of a rectangle, A = lw, where A represents the area, l represents the length, and w represents the width.

Question

The top face of an eraser has the dimensions shown. What is the area of the top face of the eraser?


Use the formula for the area of a rectangle, A = lw, where A represents the area, l represents the length, and w represents the width.

18 

36 

80 

160 

Comments

2. The top of Mrs. Vonvilla’s coffee table has the dimensions shown. She wants to put a bumper around the edges of the table to protect her child in case he falls. What is the perimeter of the tabletop? 

 

Use the formula for the perimeter of a rectangle,  , where P is the perimeter, l  is the length, and w is the width.

76 in.

152 in.

304 in.

1,344 in.

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3. Chloe is installing new windows in her house and needs to determine the amount of sealant she will need around the outside edge of each rectangular window. Each of the windows has an area of 2,160  with a length of 60 inches. What is the perimeter of each window? 

To find the width of each window, use the formula , where w represents the width, A represents the area, and l represents the length. To find the perimeter, use the formula , where P represents the perimeter, l represents the length, and wrepresents the width.

18 inches

36 inches

96 inches

192 inches

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During his science experiment, Yuri measured the temperature of a water sample as 24 degrees Celsius. To determine the temperature in degrees Fahrenheit, he used the formula , where F is the temperature in degrees Fahrenheit and C is the temperature in degrees Celsius. Which is a correct step in the process Yuri should take to convert the temperature? Check all that apply. 4. 

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goes with  #4: Substitute 24 for F.

Substitute 24 for C.

Add 32 to C before multiplying by .

Multiply the value of C by  before adding 32.

 is .

 is .

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5. The top of the lid to a small container is in the shape of a square with a side length of 6 centimeters, as shown. What is the area of the top of the lid?

Use the formula for the area of a square, , where A represents the area and s represents the side length.

12 

24 

36 

72 

Answer 1

5Q, 5A

1. 3
2. 2
3. w=A/l=2160/60=36 in; P=2l+2w=120+72=192 in, answer 4
4. 1 3 4; C=24, 9*24/5=43.2, add 32=75.2°F.
5. A=s^2=36 sq cm, answer 3

Comments

I assume these are the last questions for today. Can you reply to this comment with another comment indicating when you are likely to require help on Tuesday? Not going out Tuesday night but out Wednesday from 7.15pm to 11pm my time.