Page 348 - Math Smart - 7

d) e) 8 cm f) 14m
5 cm
—I—
4.5 m
4 cm
8 cm 7 cm 12 m 9m ■•3 m
4 cm

5 cm

Perimeter = Perimeter = Perimeter
Area = Area = Area =

O^Challenge!
Calculate the perimeter and area of the compound shape.

3 cm

3 cm

4 cm

9 cm
4 cm

9 cm

Try and Apply!
21 cm
A printing shop cuts a small piece of cardboard out from a big sheet of
cardboard as shown.
O What is the length and breadth of the small piece of cardboard? 50 mm
Q What is the perimeter of the small piece of cardboard?

O What is the area of the small piece of carboard? 28 cm

O What is the area of the cardboard that is wasted?
O If the shop cuts 500 big sheets of cardboard, what is the total area
of cardboard that is wasted?

O The 500 small pieces of cardboard are needed to cover a surface 60 mm
with an area of 16.7 m^. Are there enough small pieces to cover
the surface? Show all your calculations.

UNIT 15 I MeasuringTlme, Area, Perimeter and Volume