Calculate the radius of sector COD given the area relationship between sector AOB and sector COD.

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QUESTION 1

The formula for the area of a sector is $A = \frac{\theta}{360^\circ} \times \pi r^2$.
Given:
Angle $\theta = 60^\circ$ for both sectors.
Radius of sector AOB, $R = 15$ cm.
Radius of sector COD, $r$ cm.
Area of AOB = 3 $\times$ Area of COD.

A. The area of sector AOB

Step 1: Substitute the given values into the area formula for sector AOB.

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