Grade 7 McGraw Hill Glencoe - Answer Keys Answer keys Chapter 8: Measure Figures; Chapter Review

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Grade 7 McGraw Hill Glencoe - Answer Keys

Chapter 8: Measure Figures; Chapter Review

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For Exercises 1−3, use 3.14 for \(\pi\). Round to the nearest tenth.

Question 1 (request help)
The radius of the center circle of a basketball court is 6 feet. What is the circumference of the center circle?

\(C\approx\)

\(ft^2\)

Question 2 (request help)
A coin has a diameter of about 30 millimeters. What is the area of the coin?

\(A\approx\)

\(mm^2\)

Question 3 (request help)
Justify Conclusions Tanya and Paco are making a game for the school carnival. They cut out and remove three congruent circles from the rectangular board shown at the right. What is the area of the board after the circles are removed? Explain.

\(A\approx\)

\(ft^2\)

Question 4 (request help)
The dimensions of the bed of a dump truck are: length 20 feet, width 7 feet, and height \(9\frac{1}{2}\) feet. What is the volume of the bed of the dump truck?

\(V=\)

\(ft^3\)

Question 5 (request help)
Mrs. Delgado stores cookies in a pyramid-shaped jar that is 12 inches high and has a square base with side lengths of 14 inches. Find the volume of the jar. Round to the nearest tenth.

\(V=\)

\(in^3\)

Question 6 (request help)
Jess bought a pyramid-shaped crystal. The rectangular base of the crystal measures 9 centimeters by 8 centimeters and has a slant height of 12 centimeters. What is the surface area of the crystal?

\(SA=\)

\(cm^2\)