Question

what is formula if perimeter all firmulas​

Answer 1

Step-by-step explanation:

perimeter of triangle = sum of all sides

Square = sum of all sides

rectangle = 2 (l+b)

circle (circumference ) = 2*pi*r

Answer 2

DEAR,

THERE ARE MANY SHAPES ALL AROUND,BUT LETS GET TO LEARN SOME MOST COMMON SHAPES.

SQUARE:-

Property:-

all sides are equal :")

so, perimeter =a+a+a+a=4a.

where ; a is the side of square.

RECTANGLE:-

LET length be "l"

and breadth be "b"

perimeter = l+l+b+b

=>2l+2b

=>2(l+b)

CIRCLE:-

$2\pi \: r$

thanks!