4. I When we multiply 37
X 26
by using the common method, we start the sec-
ond line by writing a zero:
37
X 26
222
0
Explain why we place this zero in the second line.

Step-by-step explanation:

we do this because when you start multiplying your 2nd digit you would put the zero to signifie that you started a mother digit.

if this is not what your looking for then sorry

48.6 in

Step-by-step explanation:

Circumference=d

                        =(3.14)(15 in)

                        =48.6 in