Coulud you re-phrase the question in Single-Dutch, please?
36 is the only square number that is also a triangular number between 20 and 40.
40 ft by 20 ft = (40 x 20) = 800 square feet
sqrt(40) = 6.32455532 sqrt(20) = 4.47213595
It is a square number but not a perfect square number.
20 x 40 = 800 square feet !
The square root of 40 is an irrational number
36 is a square number between 30 & 40. 36 is 6 squared.
800 square feet (40 x 20 = 800).
I guess you mean: What number when you subtract 20, gives 40 as the answer?x - 20 = 40.Add 20 to both sides: x - 20 + 20 = 40 + 20x = 60
Area rectangle: 20 times 40 = 800 square inches
To find the unit rate, divide the number of people by the area in square miles. In this case, 800 people divided by 20 square miles equals 40 people per square mile. Therefore, the unit rate is 40 people per square mile.
20 ft