Which of the following statements is incorrect?
A Each angle of a rectangle is a right angle.
B All the sides of a rhombus are of equal length.
C All the sides of a parallelogram are of equal length.
D The diagonals of a square are perpendicular to one another.
The given figure (not drawn to scale) is made up of a rectangle, a square and a triangle. Find the perimeter of the figure.
A 85 cm
B 88 cm
C 72 cm
D 82 cm
The price of a refrigerator, P is 5 times that of price of a cooler, Q. If P increases by 20% and that of Q decreases by 40%, then what is the change in the total price of the refrigerator and cooler put together?