Maths in Design and Technology 24-09-21

David wants to make a tealight holder. The design will be based on a circle. How many degrees are there in a circle?

• 90

• 180

• 270

• 360

The tealight holder will be cut from a square piece of copper measuring 5cm by 5cm. What is the area of the piece of copper in mm²?

• 2.5

• 25

• 250

• 2500

What is the volume of a copper cube with sides of 5cm?

• 5cm³

• 15cm³

• 50cm³

• 125cm³

The design for the tealight holder will include 8 triangles. What do the angles in a triangle add up to?

• 180^o

• 90^o

• 270^o

• 360^o

What is the name given to a triangle with sides all the same length?

• Right Angle

• Scalene

• Isosceles

• Equilateral

David uses a tealight which measures 37mm in diameter. Approximately how big is this in inches?

• 1

• 1.5

• 2

• 2.5

Where do tealights get their name from?

• They were traditionally lit at tea time.

• They were invented by Thomas Edmund Atkin.

• They were first produced in Teanamachar, Scotland.

• They were originally used as teapot warmers.

The power output of a standard tealight is 32 watts. What is 32 x 5?

• 160

• 190

• 152

• 170

The finished tealight holder will be in the shape of a 16 sided polygon. What name is given to a 16 sided polygon?

• Pentadecagon

• Hexadecagon

• Heptadecagon

• Noideagon

A tealight weighs 18g. How much would 50 tealights weigh?

• 90g

• 900g

• 9000g

• 90000g