Page 679 - Basic College Mathematics with Early Integers

656 C HAPTE R 9 I GEOMETRY

For Exercises 31 and 32, give an exact area, then an approximate area by using p L 3.14.

31. Paul Revere’s Pizza in the USA will bake and 32. The face of a watch has a diameter of
deliver a pizza with a 4-foot diameter.This pizza is 2 centimeters.What is its area?
called the “Ultimate Party Pizza” and its current
price is $99.99. Find the area of the top of the pizza.

4 ft
2 cm

5
33. One side of a concrete block measures 8 inches by 34. A standard double roll of wallpaper is 6 feet wide
6
16 inches. Find the area of the side in square inches. and 33 feet long. Find the area of the double roll.
Find the area in square feet 1144 sq in. = 1 sq ft2.

1
35. A picture frame measures 20 inches by 25 inches. 36. A mat to go under a tablecloth is made to fit a round
2
dining table with a 4-foot diameter.Approximate
Find how many square inches of glass the frame
how many square feet of mat there are. Use 3.14 as
requires.
an approximation for p.

37. A drapery panel measures 6 feet by 7 feet. Find how 38. A page in a book measures 27.5 centimeters by
many square feet of material are needed for four 20.5 centimeters. Find its area.
panels.

39. Find how many square feet of land are in the plot 40. For Gerald Gomez to determine how much grass
shown: seed he needs to buy, he must know the size of his
yard. Use the drawing to determine how many
square feet are in his yard.
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90 feet
96 feet
80 feet

140 feet 48 feet
48 feet 24 feet
132 feet