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The area of the sector of a circle is 128$cm^{2}$. If the length of the arc of that sector is 64 cm, then find the radius of the circle. |
4 cm 8 cm 2 cm 16 cm |
4 cm |
We know that, Area of the arc = \(\frac{L × r}{2}\) We have, Area of the sector of a circle = 128 cm2 Length of the arc = 64 cm = L Area = 128 = \(\frac{64 × r}{2}\) = r = 4 cm |
