The angles of elevation of the top of a tower 72 metre high from the top and bottom of a building are 30° and 60° respectively. What is the height (in metres) of building?
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The length of each side of a rhombus is 25 m and the length of one of its diagonals is 14 m. Find the area of the rhombus?
In a rhombus _____.
A circle is inscribed in a square. If the length of the diagonal of the square is 14√2 cm, what is the area of the circle?
Find the total surface area (in cm2) of a right circular cone of diameter 21 cm and slant height 11 cm.
The surface area of a sphere is 2464 cm². Find its diameter (in cm).
If ABCD is a Cyclic Quadrilateral, then the value of Cos2A - Cos2B - Cos2C + Cos2D is
1.1 + 12.12 + 123.123 = ?
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