Question

formula of perimeter & area of triangle & rectangle

Answer 1

Perimeter of triangle=a+b+c
perimeter of rectangle=2*length*breadth

area of triangle=1/2(base*height)
area of rectangle=length*breadth

Answer 2

Perimeter of Triangle :- A+B+C where A,B, and C are three sides of the triangle.
Area of Triangle :- 1/2bh where b and h are base and height respectively.
Perimeter of Rectangle :- 2(l+b) where l and b are length and breadth respectively.
Area of Rectangle - l*b where l and b are length and breadth respectively.
Hope it helps and pls mark as the best answer. :-)