8MM Measurement Quiz

Convert 485 mm into metres.

• 48.5 m

• 4.85 m

• 0.485 m

• 485 000 m

Answer explanation

mm to cm (divide 10) --> cm to m (divide 100)

What is the perimeter of this figure?

• 48 m

• 57 m

• 63 m

• 66 m

Answer explanation

Yes this picture doesn't make much sense, but don't make assumptions if your answer was 65!

The diameter of a circle is 24 cm. Its radius is:

• 6 cm

• 8 cm

• 12 cm

• 16 cm

Answer explanation

radius = half diametre

A circle has a circumference of 132 kilometres in length. Its diameter is closet to:

• 13 km

• 21 km

• 42 km

• 207 km

A rectangular field measures 6500 cm by 7600 cm. It's area in square metres is

• 494 square metres

• 4940 square metres

• 494000 square metres

• 49400000 square metres

Answer explanation

6500 cm = 65 m and 7600 cm = 76 m

Area = 65 x 76 = 4940 square m

OR

Area = 6500 x 7600 = 49400000 square cm

49400000 divide 100^2 = 4940 square m

What is the height of a rhombus if its area if 216 square cm and its base is 180 mm?

• 1.2 cm

• 1.2 mm

• 120 cm

• 120 mm

Answer explanation

216 square cm = 21600 square mm

21600 = 180 x height

height = 21600/180

height = 120 mm (or 12 cm)

What is the surface area of this shape?

• 178 square metre

• 178 cubic metre

• 89 square metre

• 89 cubic metre

Answer explanation

2 x (11 x 3) + 2 x (11 x 4) + 2 x (3 x 4)
= 178 square cm

Find the difference in area between the square and kite shown.

• 9 square centimetre

• 29 square centimetre

• 69 square centimetre

• 89 square centimetre

Answer explanation

Area of square = 49 square cm
Area of kite = 20 square cm
Difference = 49 - 20 = 29 square cm

What is the area of this trapezium?

• 29.9 square metre

• 60.31 square metre

• 54.4 square metre

• 56.44 square metre

Answer explanation

Area = ((6.2 + 7.4) x 8)/2 = 54.4 square m

The area of a circle of radius 13 cm is closest to:

• 530 square cm

• 130 square cm

• 80 square cm

• 2120 square cm

Answer explanation

Area = 13^2 x pi = 530.92...