Question

the perimeter of a rectangle is 12cm. The area is 5cm squared.what is the length of the sides.

Answer 1

Answer:

34 cm , 12cm

Step-by-step explanation:

length of the diagonal  = root(144+25)

                                   =  root(169)

                                   = 13 cm

area of rectangle         = 12*5

                                   = 60 square cm

perimeter of rectangle = 2*(12+5)

                                   =2* 17

                                   = 34 cm

Answer 2

Answer:

2(L+B) = 12, or

L+B = 12/2 = 6, or

B = 6-L …(1)

LB=5 , or

B = 5/L …(2)

Equate (!) and (2)

6-L = 5/L

6L-L^2=5

L^2–6L+5=0

(L+5)(L-1) = 0

So L = 1 and B = 5/1 = 5

So the rectangle is 5 cm x 1 cm.