area of plain figures project work.
Answers
RECTANGLE:
● The perimeter of rectangle = 2(l + b).
● Area of rectangle = l × b
● Diagonal of rectangle = √(l² + b²)
SQUARE:
● Perimeter of square = 4 × S.
● Area of square = S × S.
● Diagonal of square = S√2.
TRIANGLE:
● Perimeter of triangle = (a + b + c)
● Area of triangle = √(s(s - a) (s - b) (s - c))
● S = 1/2 (a + b + c)
● Area of triangle = 1/2 × base × height;
● Area of an equilateral triangle = (a²√3)/4.
PARALLELOGRAM:
● Perimeter of parallelogram = 2 (sum of adjacent sides)
● Area of parallelogram = base × height
RHOMBUS:
● Area of rhombus = base × height
● Area of rhombus = 1/2 × length of one diagonal × length of other diagonal
● Perimeter of rhombus = 4 × side
TRAPEZIUM:
● Area of trapezium = 1/2 (sum of parallel sides) × (perpendicular distance between them)
= 1/2 (p₁ + p₂) × h
CIRCLE:
● Circumference of circle = 2πr
● Area of circle = πr²
● Area of ring = Area of outer circle - Area of inner circle.-PERFECTBRAINLY