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Word Problems Perimeter and Circumference of Circles.

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Presentation on theme: "Word Problems Perimeter and Circumference of Circles."— Presentation transcript:

1 Word Problems Perimeter and Circumference of Circles

2 1.If the perimeter of a square is 60 inches, how long is each side? Perimeter is the distance around an object. Square has 4 equal sides Divide the Perimeter by 4 Each side measures 15 in. P = 60 in.

3 2.If the perimeter of a square is 180 inches, how long is each side? Perimeter is the distance around an object. Square has 4 equal sides Divide the Perimeter by 4 Each side measures 45 in. P = 180 in.

4 3.A rectangular piece of board is 57.5 cm by 76.3 cm. What is the perimeter of the board? 57.5 cm 76.3 cm

5 4.A rectangular piece of bard is 62.4 cm by 57.3 cm. What is the perimeter of the board? 57.3 cm 62.4 cm

6 5. A wooden fence is to be built around a 22m by 48m lot. How many meters of fencing will be needed? If the wood for the fence costs $25.00 per meter, what will the wood for the fence cost? Two things to do here! First – find the Perimeter. Now – multiply the Perimeter by the cost per meter.

7 6. A wooden fence is to be built around a 46m by 70m lot. How many meters of fencing will be needed? If the wood for the fence costs $22.50 per meter, what will the wood for the fence cost? Two things to do here! First – find the Perimeter. Now – multiply the Perimeter by the cost per meter.

8 7. The minute hand on a clock is 8cm long. What distance does the tip travel in one complete rotation, to the nearest centimeter. Hands are the radius Don’t forget to round

9 8. The hour hand on a clock is 6cm long. What distance does the tip travel in one complete rotation, to the nearest centimeter. Hands are the radius Don’t forget to round

10 9. Mario is fencing the area shown below. If all measurements are given in feet, how many feet of fencing will he need? Fencing goes around a Perimeter. First – find the measurements of the missing sides If this is 11 – 6 = 5 This side is 9 9 – 3 = 6 This is Half of A Circle Now ADD up everything On the outside !!!

11 Jeff is fencing the area shown below. If all measurements are given in feet, how many feet of fencing will he need? Fencing goes around a Perimeter. First – find the measurements of the missing sides. If this is 10 – 7 = 3 This side is – 2 = 9 This is Half of A Circle Now ADD up everything On the outside !!!

12 11. The distance around Venus is about 38,013 km. What is the equatorial diameter of Venus? In this case, you are not looking for the circumference, but the diameter!! So, DIVIDE the circumference by pi.

13 12. The distance around Mars is about 21,344 km. What is the equatorial diameter of Mars? In this case, you are not looking for the circumference, but the diameter!! So, DIVIDE the circumference by pi.


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