The dimensions marked 12 cm, 10 cm and 4cm
are fixed but the distance x is unknown (but not negative and not bigger than 6
cm). You have to find the total area of the green space. Change the positions
of the vertices P, Q or R. Some areas will change but
others will not. Can you find the green area?
Can you explain any of
this? |
The green area is
|
What is the size of the green area?