24. 1.Find the perimeter of a triangle with
sides measuring 6 centimeters, 8
centimeters and 9 centimeters.
2. A rectangle has a length of 9 inches and a
width of 4 inches. Find the perimeter.
3. Find the perimeter of a regular octagon,
with each side measuring 7 meters.
4. Find the area of a square with each side
measuring 5 inches.
EXERCISES
25. 5. A rectangular yard has a length of 16
meters and a width of 3 meters. Find the
area.
6. A rectangle has an area of 56 square feet
and a width of 4 feet. What is the length?
7. Find the area of a parallelogram with a
base of 9 centimeters and a height of 5
centimeters.
8. The area of a parallelogram is 24 square
inches and the base is 4 inches. Find the
height.
26. 9. Find the area of a triangle with a
base of 7 meters and a height of 4 meters.
10. Find the area of a trapezoid with bases of
9 inches and 13 inches, and a height of 4
inches.
11. A dinner plate has a radius of 6
centimeters. What is the area?
12. The distance around the wheel of a truck
is 9.42 feet. What is the diameter of the
wheel?
27. 13. What is the circumference of a 12-
inch pizza?
14. A lawn sprinkler sprays water 5 feet in
every direction as it rotates. What is the
area of the sprinkled lawn?
15. A dog is tied to a wooden stake in a
backyard. His leash is 3 meters long and
he runs around in circles pulling the
leash as far as it can go. How much area
does the dog have to run around in?
28. 16. The distance around a carousel is 21.98
yards. What is the radius?
17. A storm is expected to hit 7 miles in every
direction from a small town. What is the
area that the storm will affect?
18. An asteroid hit the earth and created a
huge round crater. Scientists measured
the distance around the crater as 78.5
miles. What is the diameter of the crater?
29. 19. A semi-circle shaped rug has a
diameter of 2 feet. What is the area
of the rug?
20. A spinner has 6 sectors, half of
which are red and half of which are
black. If the radius of the spinner is 3
inches, what is the area of the red
sectors?
30. 21. A box is to be wrapped in a shiny
red decorative paper. The box
is 9 inches long, 5 inches wide, and 4
inches high.
a.) What is the minimum amount of
decorative paper needed to
cover the box?
b.) If the box contains confetti, how
many cubic inches of confetti are
needed to fill the box?
