We are given
Jim's backyard:
Length is

width is

Since, this is rectangle
so, we can find area of rectangle



Area of one sod:
length is

width is

Since, it is rectangle in shape
so,



Number of pieces of sod:
we can use formula
Number of pieces of sod = (area of Jim's backyard)/(area of one sod)

now, we can simplify it
pieces need ..............Answer
100ml u see 20% of 100 is 20 20% of 1000 is 200 so divide 200/2 =100
Taking a test doesn't lessen your risk of a heart attack
=-30
-2*-3=6
-1*5=-5
6 x -5=-30