JIPMAT: GeometryQuadrilaterals. Free, no login required.

From the four corners of a rectangular sheet of dimensions 25 cm $\times$ 20 cm, square of side 2 cm is cut off from four corners and a box is made. The volume of the box is

A circle, square, equilateral triangle and regular pentagon have the same areas. Arrange the following in ascending order based on their perimeters.

(A) Circle

(B) Square

(C) Equilateral triangle

(D) Regular pentagon

In a rhombus, the length of the two diagonals are 40m and 30m respectively. Its perimeter will be