Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 2 | Maths
One Answer Below
Anyone can contribute an answer, even non-tutors.
I don’t understand part E. The answer is 4.8, but I don’t know to get there. Thank you :)
Date Posted: 3 years ago
Views: 371
See 1 Answer
If you already did part B then you can see that the sides of triangle HJG and triangle DJK are in the ratio of 2:1.
Therefore GJ : JK = 2:1.
Triangle GJF and triangle JKF share the same height but they have different bases, which are GJ and JK.
So area of triangle GJF = 2 * area of triangle JKF = 2 * 24cm^2 = 48cm^2.
Therefore GJ : JK = 2:1.
Triangle GJF and triangle JKF share the same height but they have different bases, which are GJ and JK.
So area of triangle GJF = 2 * area of triangle JKF = 2 * 24cm^2 = 48cm^2.
I dont understand how the height of triangles JGF and JKF are the same. Could you please elaborate for me?
The perpendicular distance from GJ to F is equal to the perpendicular distance from JK to F.
I can see it now. Thank you!
360 Tutoring Program