Perimeters and Areas
1. Calculate x :
2. The ground of a sports field is covered with artificial grass and has an area of
1.02 hm 2 . A football field measuring 73 dam 2 53m 2 50dm 2 has been outlined
inside the area.
What is the surface area outside the football field? (Express in square metres)
3. (Find the area of the following shapes:
a) A regular heptagon, the length of the side is 2 cm and the apothem is 3 cm.
b) A trapezium with two bases of 80 and 50 meters, and the height is 4
decameters.
4. How long is the side of a square with an area of 225 cm 2 ?