Lengths of the perpendiculars from a point in the interior of an equilateral triangle on its sides are 3 cm, 4 cm and 5 cm. Area of the triangle is
A48√ 3 cm²
B54√3 cm²
C72√3 cm²
D80√3 cm²
A48√ 3 cm²
B54√3 cm²
C72√3 cm²
D80√3 cm²
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The length of a rectangle is of the radius of a circle. The radius of the circle is equal to the side of a square whose area is 4900 m2. What is the area (in m2) of the rectangle, if its breadth is 20 m?