The radius of a circle is 14 cm. what is area of another circle having radius 1.5 times the actual circle?

If diagonals of a rhombus are 16 cm and 30 cm. then what is the perimeter (in cm) of the rhombus?

A field in the shape of a trapezium whose parallel sides are 200 meter and 400-meter-long, whereas each of other two sides is 260 meter long. What is the area (in m²) of the field?

Given that (a²+b²)=60, then find the value of (a+b)²+(a–b)².

The length of the common chord of two intersecting circles is 24 cm. If the diameter of the circles are 30 cm and 26 cm, then the distance between the center (in cm) is 

An angle is four times its complementary angle. What is the measure of the angle?

PQRS is square whose side is 20 cm. By joining opposite vertices of PQRS are get four triangles. What is the sum of the perimeters of the four triangles?

If AD, BE and CF are medians of ∆ABC, then which one of the following statements is correct?