Areas Flashcards
What is the formula for the area of a rectangle?
L x W
What is the formula for the area of a square?
L squared
What is the formula for the area of a triangle?
B x H divide by 2
What is the formula for the area of a parallelogram?
B x H
What is the formula for the area of a trapezium?
Average of parallel sides x H
A
(A+b) x h
What are composite shapes?
Composite shapes are made up of different shapes stuck together.
How do you find the area of a composite shape?
Split the shape into seaport shape, find the area of each shape and add them together.
What is the formula for the area of a circle?
TTxr2
How do you find the circumference of a circle?
TTxdiameter
2xTTx R
How do you find the area of a sector
X ÷ 360 x area of full circle
How to find the length of an arc
X ÷ 360 x circumference of circle.
How to find the area of segment
- Find the area of the sector
- Find the area of the triangle
- Subtract triangle area from sector area.