Verified Answer :

a=lxw

a=area
l=length
w=width

so a=12*15
so the area would be 160 ft.

 First convert the linear
dimensions from feet to yards: 12 ft = 4 yd, 15 ft = 5 yd. Then when
you multiply yards by yards, you get an area in square yards, namely,
4 yd * 5 yd = 20 square yards.