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In the accompanying figure, AB is one of the diameters of the circle and OC is perpendicular to it through the centre O. If AC is 7√2 cm, then what is the area of the circle in cm2?
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- 24.5
- 49
- 98
- 154
- None of these
Correct Option: D
From given figure , we can see that
Let, OA = OC = Radius = x
∴ AO2 + OC2 = AC2 ⇒ 2x2 = 98 ⇒ x = 7
| ∴ Area of the circle = π x2 = | 22 | × 49 = 154 cm2. |
| 7 |
