Question 17
In the figure below, the area of rectangle ABCD is 200cm2. In the triangle HEB, the length
of base HE and altitude HI are 9 cm and 15cm respectively. Given that the sum
S ΔABF + SGBCD + S HEGF = 207.5 cm2. Find the area of the shaded region in cm2.

of base HE and altitude HI are 9 cm and 15cm respectively. Given that the sum
S ΔABF + SGBCD + S HEGF = 207.5 cm2. Find the area of the shaded region in cm2.
