5.
ABCD is a given rectangle with length as 90 cm and breadth as 80 cm. P, Q, R, S are the mid-points of sides AB, BC, CD, DA, respectively. A circular rangoli of diameter 20 cm is drawn at the centre as shown in the given figure. Find the area of shaded portion.
10.
A company is producing anti-aging cream and baby wipes. The company makes a profit of ₹ 45 per unit on anti aging cream and a loss of ₹ 10 per unit on Baby wipes. If the company sells 5000 units of anti-aging cream and 4000 units of baby wipes, find the profit or loss of the company due to the sale.
20.
A mobile number consists of ten digits. First four digits are 9,9, 7 and 9. Make the smallest mobile number by using only one digit twice from 7, 2, 5, 8, 0.