I believe it’s the second option,
So sorry if i’m wrong!!
For this case we have that the area of the kite is formed by the ara of two triangles with the same base of
meters and one with height 9 meters and another with height 6 meters.
So:
![A = \frac {1} {2} b * h + \frac {1} {2} b * h\\A = \frac {1} {2} 18 * 9 + \frac {1} {2} 18 * 6\\A = \frac {1} {2} 162+ \frac {1} {2} 108\\A = 81 + 54\\A = 135 \ m ^ 2](https://tex.z-dn.net/?f=A%20%3D%20%5Cfrac%20%7B1%7D%20%7B2%7D%20b%20%2A%20h%20%2B%20%5Cfrac%20%7B1%7D%20%7B2%7D%20b%20%2A%20h%5C%5CA%20%3D%20%5Cfrac%20%7B1%7D%20%7B2%7D%2018%20%2A%209%20%2B%20%5Cfrac%20%7B1%7D%20%7B2%7D%2018%20%2A%206%5C%5CA%20%3D%20%5Cfrac%20%7B1%7D%20%7B2%7D%20162%2B%20%5Cfrac%20%7B1%7D%20%7B2%7D%20108%5C%5CA%20%3D%2081%20%2B%2054%5C%5CA%20%3D%20135%20%5C%20m%20%5E%202)
ANswer:
Option B
Answer:366
Step-by-step explanation:224+142=366
Circumference = 2πr
So the circumference of the track is C = 2π .2 or .4π
3 times around the track is .4π x 3 or 1.2π - this is the answer but most teachers will want you to use 3.14 for pi.
so 1.2 x 3.14 = 3.768 km
Do you notice that I waited until the end to use the actual value of pi (3.14) in my calculations.
Keeping things in pi units until the very end saves time.
A) VERDADEIRO
b) FALSO
c) FALSO
No caso somente a alternativa A tem os pares como o mesmo valor