Mathematics
A rectangle with one side 4 cm is inscribed in a circle of radius 2.5 cm. Find the area of the rectangle.
Related Questions
In the figure (ii) given below, OAB is a quadrant of a circle. The radius OA = 7 cm and OD = 4 cm. Calculate the area of the shaded portion.
A student takes a rectangular piece of paper 30 cm long and 21 cm wide. Find the area of the biggest circle that can be cut out from the paper. Also find the area of the paper left after cutting out the circle.
In the figure (i) given below, calculate the area of the shaded region correct to two decimal places. (Take π = 3.142)
