Answer :

Step-by-step explanation:

2*40=80

so, the smallest of 80 is 2

Step-by-step explanation:

question: find the smallest number by which 80 is multiplied to make a perfect square.

80 x 6 = 400

the square root of 400 = 20

therefore 6 is the smallest number that multiplies by 80 to give a perfect square.