Sometimes we may only want an idea of the area of something, without needing an exact measurement. In such a case there are some techniques we can use to estimate area:
Estimate the area of the artwork above the sofa if the sofa is $$1.9m in length.
$$1.7 m2
$$0.01 m2
$$5 m2
$$0.5 m2
Estimate the area of the curved shape below if each square on the grid has an area of $$3 mm2.
$$111 mm2
$$72 mm2
$$26 mm2
$$48 mm2
Which of these objects do you think would have an area of about $$1m2?
goal area on a football field
lid of a shoe box
coffee table
baking tray