Question

If the length is 8 cm and breadth is (x -5 )cm and area is 3x sq.cm find the the perimeter of the rectangle.

Answer 1

Answer:

22 sq.cm

Step-by-step explanation:

GIVEN

l = 8 ; b = x - 5 ; A = 3x

A = lb

3x = 8( x - 5 )

3x = 8x - 40

8x - 3x = 40

5x = 40

x = 8

therefore b = 8 - 5 = 3

perimeter = 2 ( l + b )

= 2 ( 8 + 3 )

= 2 ( 11 )

= 22

HOPE THIS ANSWER HELPED U

Answer 2

Answer:

$perimeter \: = 22sq.cm$