Year 9 Plans And Elevations, Prisms And Surface Area

Question 1

prism

Answer 1

solid which has the same cross section along its length:
Example: Cuboid, triangular prism

Question 2

Plan

Answer 2

Top down view
Only draw line through the shape when there is a change in level
Also draw line through the shape of it is made up from other shapes.

Question 3

Front elevation

Answer 3

Direct front face of a shape
Only draw a line through the shape when there is a change in level
Also draw a line through the shape of it is made up from other shapes.

Question 4

Side elevation

Answer 4

Direct side face of a shape
Only draw a line through the shape when there is a change in level
Also draw a line through the shape of it is made up from other shapes.

Question 5

Volume of a prism

Answer 5

Area of cross section x length

Question 6

Area of a circle

Answer 6

πr²

Question 7

Circumference of a circle

Answer 7

2πr
Or
πd

Question 8

Surface area of a cylinder

Answer 8

(2πrh)+(2πr²)

Question 9

Volume of a cylinder

Answer 9

πr²h

Question 10

mm² to cm²

Answer 10

x0.01

Question 11

cm² to m²

Answer 11

x 0.0001

Question 12

mm³ to cm³

Answer 12

x 0.001

Question 13

cm³ to m³

Answer 13

x 0.000001

Question 14

How should π be considered as in equations

Answer 14

As an unknown variable, such as x, then solved when the equation cannot be simplified any further.