Asifa cut an aeroplane from a coloured chart paper (as shown in the adjoining figure). Find the total area of the chart paper used, correct to 1 decimal place.

Find the area enclosed by the figure (i) given below. All measurements are in centimeters.

Calculate the area of the shaded region shown in figure (iii) given below. All measurements are in meters.

If the sides of a square are lengthened by 3 cm, the area becomes 121 cm³. Find the perimeter of the original square.