___________
Maths
Perimeter, area and volume

Starter quiz

  • What is {2\over3} of 144 cm?
    • 96
    • 96 cm  ✓
    • 216
    • 216 cm
  • Which of these formulae finds the area of a circle with radius r?
    • area = {\pi} {\times}r
    • area = 2{\times}{\pi} {\times}r
    • area = {\pi} {\times}r2
    • area = {\pi} {\times}r^2  ✓
  • Find the area of a circle with radius of 25 cm, giving your answer both in terms of \pi and in decimal form, rounded to 1 decimal place.
    • 25\pi cm²
    • 50\pi cm²
    • 625\pi cm²  ✓
    • 1963.4 cm²
    • 1963.5 cm²  ✓
  • From its centre, this circle has been split up into 9 equally-sized sectors. How many degrees is the angle marked x?<span class="blank">______</span>
    From its centre, this circle has been split up into 9 equally-sized sectors. How many degrees is the angle marked x?______
    • '40' ✓
  • Match each statement to the correct value for a circle with a diameter of 80 units.
    • The radius is
      ⇔
      40 ✓
    • The area in terms of \pi
      ⇔
      1600\pi ✓
    • The area in decimal form is
      ⇔
      5026.5 ✓
    • The circumference is
      ⇔
      80\pi ✓
  • Which of these statements is true for this composite shape?
    Which of these statements is true for this composite shape?
    • a = 7 cm
    • a = 15 cm  ✓
    • a = 18 cm
    • The area of the composite shape is 1128 cm².  ✓
    • The area of the composite shape is 1190 cm².
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