Geometry- finding areas

17th June 2013

WALT find the Area of 2D shapes

Formulae:

Area of a Square = side x side

Example: The area of a square of side  5cm = 5 x 5 = 25 cm2

Find the area of the following squares:

The area of a square of side  10cm =    100cm2

The area of a square of side  25cm =    625cm2

The area of a square of side  5m =        25m2

The area of a square of side  50m =      2,500m2

The area of a square of side  1km =      1km2

Area of a Rectangle = length x width

Example: The area of a rectangle whose length is 6cm and width is 4cm = 6 x 4 = 24 cm2

Find the area of the following rectangles whose lengths and widths are given below:

Rectangle 1 - length is 8cm and width is 5cm

Area = 40cm2

Rectangle 2 - length is 10cm and width is 7cm

Area = 70cm2

Rectangle 3 - length is 8m and width is 6m

Area = 48m2

Rectangle 4 - length is 16m and width is 10m

Area = 160m2

Rectangle 5 - length is 4km and width is 2km

Area = 8km2