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Chapter 1: Q50. (page 9)

The formula for the area of a circle with diameter d is $A = 蟺 {(\frac{d}{2})}^{2}$ . Write an expression to represent the area of the circle.

Short Answer

Expert verified

Area of circle is represented as $蟺 {(\frac{y + 5}{2})}^{2}$

Step by step solution

- Observation from figure

From figure, diameter of circle is $y + 5$

- Substitution

Substitute $y + 5$ for to get the expression for area of circle

- Required expression

Expression for area of circle is represented as $A = 蟺 {(\frac{y + 5}{2})}^{2}$

Thus, required expression is $A = 蟺 {(\frac{y + 5}{2})}^{2}$

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The formula for the area of a circle with diameter d is $A = 蟺 {(\frac{d}{2})}^{2}$ . Write an expression to represent the area of the circle.