Mensuration

Question 1

What is mensuration?

Answer 1

Another word for measurement (was often used specifically to refer to the measurement of geometrical shapes.

Question 2

What is the square method?

Answer 2

Dividing a polygon into squares and measuring each square individually. This may be useful when working out area.

Question 3

How to find the area of composite shapes?

Answer 3

Split the shape into simpler components

Question 4

How to calculate the length of an arc?

Answer 4

Arc = circumference (2πr) x ∠a ÷ 360

Question 5

How to work out the area of a section of a circle?

Answer 5

Angle divided 360 x whole area of a circle.

Question 6

How to work out the triangular area of a section of a circle?

Answer 6

Half x radius squared x sin angle

Question 7

How to work out the area of segment of circle?

Answer 7

Arc formula (circumference x angle divided bu 360) - triangle formula (chord x sin angle).

Question 8

How to work out the perimeter of a segment of a circle?

Answer 8

Angle divided by 360 x perimeter + radius x2