Answer:
10, 20, 40
Step-by-step explanation:
(I'll do my best to explain this:) ) if you put two triangles together they equal a rectangle. In other words if you split a rectangle from upper left corner to lower right corner you get two triangles. So if you multiply the triangle formula twice you get the rectangle formula.
The answer is 3/4..............
Answer:
what is the perimeter of a 12 cm and 4cm is16cm
