Math 3
Homework due January 20, 2015
Go on line (YouTube) and learn how to use the Ti 30 SX calculator so you can teach someone.
Find five round objects of different sizes. For example, paper towel roll. Measure around the
outside of the roll using a piece of string. The string should be as thin as possible (sewing thread
would work well) then across the middle. Divide middle into the outside measurement. Do this
for all five objects. Make a chart showing your results.
Perimeter and Area of Polygons
Show work. No work, no credit
1) A bathroom had a length of 3 feet and a total area of 27 sq. ft.. What is the width of the
bathroom?
2) A restaurant added a new outdoor section that was 8 feet wide and 6 feet long. What is the
area of their new outdoor section?
3) A piece of sheetrock was cut so its length was 5 feet and its total area was 45 sq. ft. What is
the width of the sheetrock?
4) An island in the Indian Ocean had was 10 miles wide and 3 miles long. What is the
perimeter of the island?
5) A rectangle had a length of 8 inches and a width of 7 inches. What is the area of the
rectangle?
6) At the playground, the new sandbox was 3 meters wide and 2 meters long. What is the area
of the sandbox?
7) Nancy bought some wrapping paper for Christmas that was 7 feet long and 8 feet wide.
What is the area of the wrapping paper she bought?
8) A window had a length of 8 feet and a width of 6 feet. What is the perimeter of the window?
9) A piece of plywood had a total area of 30 square feet, with a width of 3 feet. What is the
length of the wood?
10) A farm had an area of 35 sq. mi. The farm is 7 miles wide. How long is the farm?
Area and Circumference of a Circle
Match the word problems to their answers. Write the letter of the answer
that matches the problem. Use 3.14 for pi. Units of measurements are
removed. Show work. No work, no credit.
_______
1. Patricia buys a round dinner table. The radius of
dinner table is 6 meters. What is the area of table?
a. 56.52
_______
2. Charles has a circular carpet in his drawing room.
He wants to put a table in middle of the carpet. The
diameter of the carpet is 12 meters and the
diameter of the table is 4 meters. Calculate how
much area of carpet is left after putting table the
table in the place?
b. 113.04
_______
3. Steven purchases a bowl. The diameter of the
bowl is 14 cm. What is the circumference of the
bowl?
c. 43.96
_______
4. Daniel wants to buy cookies for her friend. The
radius of a cookie is 5 inches. What is the cookie’s
circumference?
d. 50.24
______ 5. Donna makes a round pizza. She wants to put a
cheese layer on the pizza. If the cake is 8 cm in
diameter, how many square cm of cheese layer
does she need to put on the pizza?
e. 19.625
_______ 6. Cynthia wants to buy a round photo frame for
her brother. The radius of the photo frame is 9 cm.
What is the photo frame’s circumference?
f. 100.48
_______ 7. Brian made a tasty burger. The diameter of the
burger was 5 cm. What was the area of burger?
g. 31.4