Areas And Volume

Question 1

Parallelogram

Answer 1

b x perpendicular h

Question 2

Trapezium

Answer 2

A + B
______ x h
2

Question 3

Rhombus

Answer 3

( work out 1 triangle 1/2 b x h) then x by 4

Question 4

Kite

Answer 4

A:(Work out 1 of the two top triangles) then x by 2
B:(Work out 1 of the two bottom triangles) then x by 2

A + B = Area of kite

Question 5

Arc length of circle

Answer 5

Circumference formula: Pi x D or Pi x R(squared)

N°
___ x Pi x 2 x radius = answer
360°

Question 6

Area of a sector

Answer 6

N°
—- x Pi x radius(squared) = answer
360°

Question 7

Finding the angle of a sector

Answer 7

Use formula for area:

            360°

rearrange and subtitute the formula to find n°.

Question 8

Volume of a cuboid

Answer 8

Length x width x depth

Question 9

Surface area of a cuboid

Answer 9

Work out the area of each of the three visible faces and x by 2.

Question 10

Volume of a cylinder

Answer 10

Pi x radius(squared) x h

Question 11

Volume of a cone

Answer 11

1/3 Pi x radius(squared) x h

Question 12

Volume of a sphere

Answer 12

4/3 x Pi x radius(cubed)

Question 13

Surface area of a sphere

Answer 13

4 x Pi x radius(squared)

Question 14

Triangle

Answer 14

1/2 b x h