Surface Area of Objects (Yr 9 Ace)

Mathematical Equivalence

ON

Mathematical Equivalence

ON

Given a cylinder with a surface area of 2543 cm² and radius of 9 cm, calculate the height of this cylinder to the nearest tenth.

• 36.0 cm

• 45.0 cm

• 10 cm

• 282.6 cm

Find the surface area of this triangular prism.

Use your formulae sheet to assist with calculations.

Type your answer without units.

Mathematical Equivalence

ON

Find the surface area of this triangular prism.

Use your formulae sheet to assist with calculations.

Type your answer without units.

Mathematical Equivalence

ON

Find the surface area of this pyramid.

Use your formulae sheet to assist with calculations.

Type your answer without units.

Mathematical Equivalence

ON

Find the surface area of this pyramid.

Use your formulae sheet to assist with calculations.

Type your answer without units.

Mathematical Equivalence

ON

Assuming a basketball is a perfect sphere and has a diameter of 24cm, use the formula for the surface area of a sphere to calculate the surface area of a basketball.

Round your answer to 2 d.p.

Mathematical Equivalence

ON

Planet Earth is not quite a perfect sphere.

What is the difference in squared kilometres between the surface area of Earth using the Equatorial radius and the surface area of Earth using the Polar radius?

_______ km²

Assume the Earth is a sphere for each of the surface area calculations using the different radius.

Round your answer to the nearest whole number.

Answer explanation

Mathematical Equivalence

ON

Answer explanation