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Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085

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Chapter
Section
BuyFindarrow_forward

Elementary Geometry For College St...

7th Edition
Alexander + 2 others
ISBN: 9781337614085
Textbook Problem

In Exercises 34-45, use your calculator value of π unless otherwise stated. Round answers to two decimal places.

A circular grass courtyard at a shopping mall has a 40 ft diameter. This area needs to be reseeded.

a) What is the total area to be reseeded? (Use π = 3.14)

b) If 1 lb of seed is to be used to cover 60 ft2 region, how many pounds of seed will be needed?

c) If the cost of 1 lb of seed is $5.95, what is the total cost of the grass seed needed.

To determine

a)

To Find:

The area of the grass courtyard and cost of the grass seed needed.

Explanation

It is given that the diameter of the circular courtyard is 40 ft.

The radius of the courtyard is r=d2=402=20.

The area of the circle is A=πr2

To determine

b)

To Find:

The number of pounds of seed needed.

To determine

c)

To Find:

The total cost of the grass seed needed reseed the courtyard.

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