Question 25
Answer-format rule printed in the source: round a non-integer answer to the nearest integer. If a calculated answer has more than five digits, write its last five digits.
The equilateral octagon ABCDEFGH consists of equilateral triangle ABH, square BCGH and equilateral pentagon CDEFG, as shown. Its perimeter is 112 units. Find the area of square BCGH. (Area of a square = side length × side length.)
The equilateral octagon ABCDEFGH consists of equilateral triangle ABH, square BCGH and equilateral pentagon CDEFG, as shown. Its perimeter is 112 units. Find the area of square BCGH. (Area of a square = side length × side length.)