Area and perimeterseahantri3524.wp-sch.durham.gov.uk/wp-content/uploads/...Area and perimeter 1 Use...
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Area and perimeter
1 Usethewordstocompletethesentences.
area around
cm2perimeter cm m
m2 inside
istheamountofspace a
two-dimensionalshape.Itcanbemeasuredinunitssuchas
or
isthedistance atwo-dimensional
shape.Itcanbemeasuredinunitssuchas or
2 Workouttheareasandperimetersoftheshapes.
a) b) 6cm
4cm
perimeter= cm perimeter= cm
area= cm2 area= cm2
3 Workoutthemissingvalues.
a)
8cm
cm
area=32cm2
perimeter= cm
b)
8cm
cm
area= cm2
perimeter=40cm
c)
area= m2
perimeter=36mm
4 Workouttheareasandperimetersoftheshapes.
ShapeA ShapeB
area= cm2 area= cm2
perimeter= cm perimeter= cm
Whatdoyounotice?
©WhiteRoseMaths2019
6cm
4cm
2cm
2cm
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5
Whodoyouagreewith?
Drawsomeexamplestosupportyouranswer.
©WhiteRoseMaths2019
6 Tworectilinearshapes,AandB,eachhaveanareaof12squares.
• ShapeAhasthelargestperimeterpossible.
• ShapeBhasthesmallestperimeterpossible.
DrawshapesAandB.
Whatdoyounotice?
7 MrJoneshas50moffencing.
Hewantstomakearectilinearenclosureusingallthefencing.
a) Drawanexampleofashapehecouldmake.Giveunitson
yourdiagram.
b) Whatisthegreatestpossibleareaoftheenclosure?
c) Whatisthesmallestpossibleareaoftheenclosure?
If you start with a rectilinear shape, when you increase
the area, the perimeter will increase.
TommyIt depends on
the shape.
Amir
1cm
1cm
1cm
1cm