@Imaculate got this first and also explained a little,Congrats

Let the width be x
Length=5+x
Area=Length*width
50=x(5+x)
50=5x+x²
x²+5x-50=0
(x+10)(x-5)=0
x=-10or5
Since x can't be negative
Therefore x =5cm
Length=5+5=10cm
Perimeter=2(length+width)
perimeter=2(10+5)
Perimeter=2(15)=30cm

Area*perimeter=50cm²*30cm=1500cm³

Answer= 1500
Length= 10cm
Width= 5cm
Perimeter = 2(L+W)
= 2(10+5)= 2×15 = 30cm
Area + Perimeter = 50 +30 =1500