Geometry Shapes Formulas for Class 9

Geometry Shapes Formulas for Class 9
Geometric Figure	Area	Perimeter
Rectangle	$A=l\times w$	$P=2\left(l+w\right)$
Triangle	$A=\frac{1}{2}bh$	$P=a+b+c$
Trapezoid	A = $\frac{1}{2}h\left(b_1+b_2\right)$	$P=a+b+c+d$
Parallelogram	$A=bh$	$P=2(b+h)$
Circle	$A=\pi r^2$	$C=2\pi r$