Question

the area of a rectangle is 240m². if the length of the rectangle is 12 m, then find its perimeter​

Answer 1

Answer:

Perimeter = 64 m

Step-by-step explanation:

Area of rectangle = Length * Breadth

240 m^2 = 12 m * Breadth

Breadth = 240 m^2 / 12 m

Breadth = 20 m

Perimeter = 2 ( Length * Breadth )

Perimeter = 2 * ( 20 m + 12 m )

Perimeter = 64 m

Answer 2

Answer:

64 mtr

Step-by-step explanation:

Area of a rectangle = l x b

240 = 12 x b

b = 240/ 12

b = 20 m

perimeter = 2( l + b )

                 = 2(12+20)

                 = 2 x 32

                 = 64 m

perimeter of the given rectangle is 64mtr.