Save guides, add subjects and pick up where you left off with your BBC account. To calculate the sector area, first calculate what fraction of a full turn the angle is. Calculate the area of this ...

Area of Triangle Formula: In general, "area" refers to the region inside the boundary of a flat object or figure and is measured in square units, with the standard unit being square meters (m²). There ...

In order to derive the formula to calculate the angle at the centre of the sector, the formulae for the arc length and area of a sector can be rearranged so that we can calculate the fraction of ...