Aussie Maths & Science Teachers: Save your time with SmarterEd
Andrew drew a shape as pictured below.
What is the perimeter of this shape in centimetres?
`101` | `112` | `127` | `148` | `154` |
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`154\ text(cm)`
`text(Starting at the bottom left corner and)`
`text(moving clockwise:)`
`text(Perimeter)` | `= 26 + 30 + 26 + 8 + 21 + 16 + 21 + 6` |
`= 154\ text(cm)` |
What is the perimeter of the shape below given each square has a side length of 1 cm?
`text(8 cm)` | `text(18 cm)` | `text(20 cm)` | `text(36 cm)` |
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`text(20 cm)`
`text(Starting at the bottom right corner and)`
`text(moving clockwise:)`
`text(Perimeter)` | `=5+3+1+2+1+2+1+2+2+1` |
`=20\ text(cm)` |
Justin connects three of his restaurant tables together to make one long table.
The view from above the tables is shown below.
Each table is 70 cm long and 50 cm wide.
What is the perimeter of the long table?
cm |
`520\ text(cm)`
The table shows the dimensions of four different rectangles in centimetres.
Which rectangle has a perimeter of 28 centimetres?
`text(Rectangle 1)` | `text(Rectangle 2)` | `text(Rectangle 3)` | `text(Rectangle 4)` |
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`text(Rectangle 1)`
`text(Consider rectangle 1,)`
`text(Perimeter)` | `= 2 xx text(length) + 2 xx text(width)` |
`= (2 xx 9) + (2 xx 5)` | |
`=28\ text(cm)` |
`:.\ text(Rectangle 1 has a perimeter of 28 cm.)`