Page 364 - Math Smart - 7
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Abbreviation
Unit of nieasurement for area (not drawn to scale)
square millimetre
1 mm
A square that measures Converting between units in area
1 mm by 1 mm has an area 1 mm mm
of 1 square millimetre. X 1 000 000
square centimetre
1 cm
A square that measures
cm
1 cm by 1 cm has an area of 1 cm m^ cm^ mm^
1 square centimetre.
^ 100^ -r 102
square metre
1 m
A square that measures ^ 1 000 000
m
1 m by 1 m has an area of
1 m
1 square metre.
Volume
Solid Number of flat faces Number of vertices Number of edgef^
Cuboid
12
Cube
12
Volume of a solid Surface area of a solid
Definition A measure of how much space a solid takes up. The total area of all the faces of a solid.
Units mm^ cm^ or m^ mm^ cm^ or m^
Formula Volume = Ix bx h Total surface area
^Ibh = (Area of face A x 2) + (Area of face B x 2)
+ (Area of face C x 2)
= 2Ui + 2hb + 21b
height h
h
'Breadth b
length I n Face 2
Face 1
Face 3
UNIT 15 I Measuring Time, Area, Perimeter and Volume
