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a.
To find the algebraic expression of ‘A’ that could be used to find the radius of the
a.
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Answer to Problem 40STP
Radius
Explanation of Solution
Given information:Area of a circle.
Area of a circle
Use this to find out the radius, if the area of the circle is provided.
Taking square root on both sides.
b.
To find the radius of the circle to the nearest tenth.
b.
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Answer to Problem 40STP
Radius
Explanation of Solution
Given information:Area of the circle
Formula used: Area of a circle
Calculation:
Area
Change the left-hand side to ‘r’ to find the radius.
Take square root on both sides.
Putting the values in this expression.
Taking
Taking square root.
Rounded to nearest tenth.
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