smc-2907-50-Measurement

Number and Algebra, NAP-G1-34 SA

Archer has blocks with two square faces.

He builds the model below.

What is the height of the model in centimetres?

centimetres

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`12\ text(cm)`

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`text(2 × length of block = 18 cm)`

`text(Length of 1 block = 9 cm)`

`text(Side length of the square face)`

`= 9 ÷ 3`

`= 3\ text(cm)`

`:.\ text(Height)`	`= 3 xx 4`
	`= 12\ text(cm)`

Katrina puts some Rubik's cubes and identical bolts end to end.

3 Rubik's cubes are the same length as 4 bolts.

Each Rubik's cube is 8 cm long.

How many centimetres long is each bolt?

centimetres

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`text(6 cm)`

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`text(Total length of 3 Rubik’s cubes)`

`= 3 xx 8`

`= 24\ text(cm)`

`:.\ text(Length of one bolt)`

`= 24 ÷ 4`

`= 6\ text(cm)`