This math topic focuses on determining the area of a circle from given radii. Key tasks involve converting the radius into the area formula, which is \( \pi r^2 \), and evaluating the expression to find the correct area equation. The problems require students to apply the squared value of the radius and multiply by \( \pi \) to achieve the correct answers. This topic is an introductory level unit on geometric calculations involving circle areas, enhancing students' abilities to work with exponents in the context of geometric formulas.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.

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Area of a Circle - Radius to Equation - Squared Values Worksheet

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Area of a Circle - Radius to Equation - Squared Values
1
An svg image showing a math problem
Find the equation that represents the area of this circle
a A LaTex expression showing Pi over 81
b A LaTex expression showing Pi times 81
c A LaTex expression showing Pi times (81 over 2 ) to the power of 2
d A LaTex expression showing Pi times (6 over 2 ) to the power of 2
e A LaTex expression showing Pi over 13
2
An svg image showing a math problem
Find the equation that represents the area of this circle
a A LaTex expression showing Pi over 3
b A LaTex expression showing Pi times 2
c A LaTex expression showing Pi times (9 over 2 ) to the power of 2
d A LaTex expression showing Pi times 9
e A LaTex expression showing Pi over 9
3
An svg image showing a math problem
Find the equation that represents the area of this circle
a A LaTex expression showing Pi times (8 over 2 ) to the power of 2
b A LaTex expression showing Pi times (10 over 2 ) to the power of 2
c A LaTex expression showing Pi over 64
d A LaTex expression showing Pi times 64
e A LaTex expression showing Pi over 8
4
An svg image showing a math problem
Find the equation that represents the area of this circle
a A LaTex expression showing Pi over 81
b A LaTex expression showing Pi times (9 over 2 ) to the power of 2
c A LaTex expression showing Pi times 10
d A LaTex expression showing Pi over 9
e A LaTex expression showing Pi times 81
5
An svg image showing a math problem
Find the equation that represents the area of this circle
a A LaTex expression showing Pi times (6 over 2 ) to the power of 2
b A LaTex expression showing Pi times 3
c A LaTex expression showing Pi times (9 over 2 ) to the power of 2
d A LaTex expression showing Pi times 4
6
An svg image showing a math problem
Find the equation that represents the area of this circle
a A LaTex expression showing Pi times 10
b A LaTex expression showing Pi times 49
c A LaTex expression showing Pi times 3 to the power of 2
d A LaTex expression showing Pi times (49 over 2 ) to the power of 2
7
An svg image showing a math problem
Find the equation that represents the area of this circle
a A LaTex expression showing Pi times 64
b A LaTex expression showing Pi over 5
c A LaTex expression showing Pi times (8 over 2 ) to the power of 2
d A LaTex expression showing Pi over 6
8
An svg image showing a math problem
Find the equation that represents the area of this circle
a A LaTex expression showing Pi times (2 over 2 ) to the power of 2
b A LaTex expression showing Pi over 0
c A LaTex expression showing Pi times 1
d A LaTex expression showing Pi times 4
e A LaTex expression showing Pi times 0