A square floor has a diagonal of 30 feet. What is the closest estimate of the perimeter, in feet, of the floor?
A square floor has a diagonal of 30 feet. What is the closest estimate of the perimeter, in feet, of the floor?
Explanation
Step 1: Use the Diagonal Formula for a Square
For a square with side length , the diagonal is given by:
Substituting
Step 2: Solve for s
Multiply numerator and denominator by to rationalize:
ApproximatingStep 3: Calculate the Perimeter
The perimeter of a square is:
P=4s
P≈4×21.21=84.84
The closest estimate is 85.