Question

what is the formula of
Rectangle
square in perimeter
What is formula of
Rectangle
Square in area?​

Answer 1

Answer:

rectangle perimeter : 2×l+b

area= l×b

square perimeter 4×side

area side×side

Answer 2

Question:

To write formulas for area of rectangle , square

Solution:

Area of rectangle:

l x b = Length x Breadth

Perimeter of rectangle:

2(l+b)

where l is length and b is breadth

Area of square:

s x s = side x side

Perimeter of square :

4s

where s is side

Extra information:

Area of triangle :

$\frac{1}{2}\times b \times h$

or

herons formula

$\sqrt{s(s-a)(s-b)(s-c)}$

where s = $\frac{1}{2} \:\textsf{perimeter}$

s = $\frac{a+b+c}{2}$

Perimeter of triangle :

3s = 3(sides)

Area of circle:

πr²

Where r = radius

Perimeter or circumference of circle :

2πr

Where r = radius