
Find the area of each washer to the nearest tenth.

Answer to Problem 1STP
B
Explanation of Solution
Given:
A machine is making steel washers by cutting out 10-millimeter circular disks from 34-millimeter circular disks .
Formula Used:
Area of a
Calculation:
Let the large circle be
So,
radius ,
area ,
Let the small circle be
So, radius ,
area,
So, the area of washer is :
So, the correct option is B.
Chapter 13 Solutions
Geometry, Student Edition
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