How many acres is 200 x 400?

Answer 1

I depends what the units for the 200 and 400 are.

1 acre = 4840 sq yds

200 × 400 = 80,000 sq units

You will need to know the ratio of 1 yd to 1 of your units

Then the ratio of the areas is the ratio of the lengths squared.

Then divide the 80,000 by the area's ratio to find what what it is in sq yd and finally divide that by 4840 sq yds/acre to find out how many acres it is.

eg if your units are metres:

1 yd = 0.9144 m

→ 1 sq yd = 0.9144² sq m

→ 80,000 sq m = 80,000 ÷ 0.9144² sq yd = 80,000 ÷ 0.9144² ÷ 4840 acres ≈ 19.77 acres

eg if you units are yards:

1 yd = 1 yd

→ 80,000 sq yd = 80,000 ÷ 4840 acres ≈ 16.53 acres

eg if you units are feet

1 yd = 3 ft

→ 1 sq yd = 3³ sq ft

→ 80,000 sq ft = 80,000 ÷ 3² sq yd = 80,000 ÷ 3² ÷ 4840 acres ≈ 1.84 acres

If your units are something else then you'll need to do the final conversion - this is why mathematical answers are INCORRECT when there are units and they are NOT given in the answer.