What is 70*3/4 explain how you got your answer

When you multiply a whole number by a fraction, multiply the whole number by the numerator, then divide that by the denominator.

70 x 3/4 = (70 x 3) /4  = 210/4 = 52.5

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

idk

step-by-step explanation: