If two squares X and Y have each side of 10 m and 20 m respectively, then the side of the square Z whose area is equal to the sum of the areas of square X and square Y is:
Answer & explanation
Correct answer: option 4
Two squares X and Y have each side of 10 m and 20 m
Area of X = 100 sqm.
Area of Y = 400 sqm.
Sum of area = 500 sqm
Area of Z = 500 sqm.
Side of Z = sqrt(500) = $10\sqrt{5}m$
The correct answer is Option (4) → $10\sqrt{5}m$