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Question 6

1) Use the perimeter of a rectangle formula.

2) NOTICE you are given the perimeter, so the 120 goes in for the P.

Chapter 8 Test review

Question 4

Complete question #6

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Answer

40 cm

1) To find the perimeter of a triangle add all sides together.

2) Use the area formula of the triangle to find the area of the triangle.

Complete question #4

Click the arrow to check your answer

Question 5

Answer

P = 20 cm

A = 33 cm

2

1) Use the area formula for the triangle.

2) Notice you are given the area. SO make sure you fill in the 200 where the A is in the formula.

3) Solve for h

Question 3

Complete question #5

Click for answer

Answer

40 cm

Question 2

Recall the formula for the circumference of a circle. This will allow you to find the radius.

Once you found the radius you can then find the area using that radius.

Recall the formula for circumference of a circle (day 2 notes)

For this question you are given the circumference and you have to find the radius.

Remember to factor out the pi first!!

Answer

r = 100cm

Complete question #2 and then Click the arrow to see the answer

complete question 3 and then click the arrow to see the answer

Question 7

Answer

100 pi

1) Find the perimeter of the picture frame.

2) Subtract the amount he needs from the amount he has.

3) Notice the final answer must be in feet!!

Complete question 7

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Answer

2 feet

Question 8a

1) to calculate scale factor you create a ratio of copy over original.

Complete question 8a

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Directions

Answer

1

4

1) Read each review section completely.

2) Answer the question on your review packet.

3) Check your answers by clicking to the next circle.

Click the arrow

Question 1

Question 8b

Recall the two formulas to find the circumference of a circle. (look in your day 2 notes)

Recall the formula to calculate the area of a circle. (look in your day 2 notes)

Make sure you are using the correct measurement, meaning should you be using the radius or diameter.

Complete question 1, then click the arrow to see the answer.

Answers

1) C = 62.8 cm

A = 314.2 cm

2

1) To calculate the scale factor set a ratio of copy over original.

** Notice the copy has a length of 1 foot, you need to put that into inches first.

Complete question 8b

Click for answer

Answer

3

Question 9

1) Using a proportion find how many miles it is from Buffalo to London, Ontario.

2) Recall the left side of the proportion is the scale.

3) Notice the question asks for how many miles ROUND trip, meaning there AND back.

Complete question #9

Click for Answer

Answer

300 miles

Question 13

Question 10

Question 11

1) Using a proportion find the real life length and width of the room.

2) Then you can calculate the area of the actual room.

1) Calculate the area of the larger space first

2) Calculate the area of the smaller object.

3) Subtract to find the area that is shaded.

Question 12

1) Using a proportion find the length and width of the pool on the BLUEPRINT.

2) Then you can use the perimeter formula for a rectangle to find the perimeter.

Complete question #10

Click for answer

Answer

2

10,240 feet

Complete question #13

Click for answer

1) Using a proportion find the actual length and width of the room.

2) Use the area formula for a rectangle and calculate the area.

Complete question #11

Click for the answer

Answer

2

Answer

21.5 ft

2

54 cm

Complete question #12

Click for the answer

Answer

2

726 ft

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