Year 9 Measurement

Bob walks around a rectangular paddock and then measures the distance he has travelled. He is calculating the:

• Area

• Perimeter

• Surface Area

• Volume

To find the area of the paddock, Bob will need to know:

• The perimeter

• The length and width

• The time it took him to walk the outside

• How many cows are in the paddock

If the paddock is 75 metres wide and twice as long, what is the perimeter?

Bob is building a new gate for his paddock, which includes a white triangle painted on a piece of tin. What is the total area of the gate?

• 42 square feet

• 120 square feet

• 99 square feet

• 100 square feet

In square feet, how much of the gate does NOT need to be painted white?

• 99 square feet

• 120 square feet

• 21 square feet

• 100 square feet

Which of the following is NOT a prism

• Cyinder

• Cube

• Pyramid

Bob is going to build a silo for his paddock in the shape of a cylinder. What would the net of his silo look like?

• Two rectangles and a circle

• One circle and one rectangle

• Two circles and rectangle

• Six squares

To find the volume of his cylindrical silo, Bob would have to multiply which two measurements?

• Circumference and height

• Base area and height

• Radius and height

• Diameter and height

What formula could Bob use to find the area of the circular base?

• 2 x pi x r

• pi x r squared

• pi x D

• C3PO

If the silo is to be 10m high and have a radius of 2m, calculate the Volume (rounded up to the nearest metre cubed)