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22. A circular garden of radius 15m has a 2m wide circular path inside arround it. Find the area of thepath.23. Find the radius of a sphere whose surface area is 616 cm2.24. Evaluate : Cos 43o. Cot 79o– Sin 47o. tan 11o25. A pole of height 6 m casts shadow of 2 3 m on the ground. Find the Sun’s elevation.26. Evaluate a3+b3, if a+b = 7 and ab = 12. |
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Answer» 22 ) Let the RADIUS of OUTER CIRCLE be (R ) = 15 cm |
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