Question

the length of a rectangle is 3x^2+5x-1 cm and its width is 3x+1. find the perimeter

Answer 1

Answer:

The perimeter of rectangle is 6x² + 16x.

Step-by-step explanation:

length of a rectangle    =      3x² + 5x - 1

width of the rectangle   =   3x+1

Perimeter of a rectangle =   2(l + b)

                                        =  2( 3x² + 5x - 1 + 3x +1)

                                        =  2(3x² + 8x)

                                        = 6x² + 16x        (Ans)