Answer: She is not correct, because she must multiply the base and the height of the triangle and then divide by 2.
Step-by-step explanation:
1. The formula for calculate the area of a triangle is shown below:
[tex]A=\frac{b*h}{2}[/tex]
Where [tex]b[/tex] is the base and [tex]h[/tex] is the height.
2. Then, if she applied the method she reasoned, she'd obtain the following area:
[tex]b=\frac{4ft}{2}=2ft\\h=\frac{2.8ft}{2}=1.4ft\\A=2ft*1.4ft\\A=2.8ft^{2}[/tex]
3. But actually, Magda should multiply the base and the height of the triangle and then divide by 2. Then, the correct area is:
[tex]A=\frac{4ft*2.8ft}{2}=5.6ft^{2}[/tex]
Answer:
No, Magda is incorrect. The actual area is 0.5(4)(2.8) = 5.6 ft2. With Magda's method, the area would be (2)(1.4) = 2.8 ft2.
Step-by-step explanation:
