Unit 6 Review

Vocabulary

100

The length from one half of the circle to the end

radius

200

The length from end to end of the circle

diameter

300

it measures 360 degrees around

circle

400

what is measurement of pi

3.14

500

what is the formula for area of a circle

2xradiusxpi

Circumference in terms of pi

100

The radius of a circle is 13 in. Find its circumference in terms of pi.

C=26π in

200

The radius of a circle is 19 cm. Find its circumference in terms of pi.

C=38π cm

300

The diameter of a circle is 10 cm. Find its circumference in terms of pi.

C=10π cm

400

The radius of a circle is 4 m. Find its circumference in terms of pi.

The circumference of the circle is 8π m.

500

The radius of a circle is 19 m. Find its circumference in terms of pi.

C=38π

Circumference with Rounding

100

The diameter of a circle is 55 in. Find the circumference to the nearest whole number

C=173 in

200

The diameter of a circle is 184 m. Find the circumference to the nearest whole number.

The circumference is approximately 578 m.

300

The radius of a circle is 9.9 cm. Find the circumference to the nearest whole number.

The circumference is approximately 62 cm.

400

The diameter of a circle is 20 m. Find the circumference to the nearest tenth.

C=62.8 m

500

The diameter of a circle is 40 m. Find the circumference to the nearest whole number.

The circumference is approximately 126 m.

Rounding

100

Round 8.329 to the nearest tenth.

8.3

200

Round 5.61 to the nearest whole number

6

300

Round 2.567 to the nearest tenth

2.6

400

Round 0.43 to the nearest whole number

0

500

Round 9.32 to the nearest tenth

9.3

2 step equations

100

−z+7=6

1

200

−1+8z=−73

-9

300

−98= 4x−50

6

400

7b+2= 23

3

500

−16−7a= 5

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