The figure is made up of three triangles, JKL, MNP and QRS not drawn to scale. The area of triangle QRS is six times the area of triangle JKL. The area of triangle JKL is
13 of triangle MNP. The area of triangle JKL is 19 cm
2. What is the total area of the shaded parts?
JKL |
MNP |
QRS |
1 |
3 |
|
1 |
|
6 |
1 u |
3 u |
6 u |
Area of Triangle JKL = 1 u
1 u = 19
Area of the unshaded part
= Area of Triangle MNP - Area of Triangle JKL
= 3 u - 1 u
= 2 u
Area of the shaded part
= 6 u - 2 u
= 4 u
= 4 x 19
= 76 cm
2
Answer(s): 76 cm
2