Question

can some one help me to solve this

Answer 1

perimeter of rectangle is 2×l+b

Answer 2

perimeter:-
triangle = 3 X s i d e
circle. = ...2π r
rectangle. = 2 x l + b
square. = 4 X side
parallelogram = 2 x l + b
rhombus. = 4 X side
trapezium = b a s e + b a s e + side + side
semicircle = 1/2 π × d

area
Triangle = half x b x h
circle = πr^2
rectangle= l x b
square= side X side
parallelogram= l x b
rhombus= side X side
trapezium= base X side