5y and 155 create a straight line so:
5y + 155 = 180
5y = 25
y = 5
5y and 13x create a 90 angle so:
5y = 5(5) = 25
25 + 13x = 90
13x = 65
x = 5
Hope this helps :)
r to the 4th power = r⁴
t to the third power = t³
r to the 4th power times t to the third power would be written as:
(r⁴)(t³)
<span><span>A <span>= <span>π <span>r</span></span></span></span></span>² <span><span><span>= <span>π </span></span></span></span>×<span><span><span><span> <span>5</span></span></span></span></span>²<span><span><span><span><span> </span></span></span><span>≈ 78.53982
</span></span><span>A </span></span>≈ 78.4
To find the area of a circle.
We first need the radius.
This is quite simple, the radius is half of the diameter
Knowing the diameter is 14
14 divided by 2 = 7.
Now for a circle here is the equation
A = Area
A = <span>π r ^2
</span>
So we have the radius being 7 but now it needs to be squared.
7 x 7 = 49.
So now our equation is.
A = <span>π 49 ^2 (Keep in mind ^2 is just squared)
</span>
Now this is the answer but we can get more technical by multiplying 49 times <span>π
</span>
Now <span>π equals roughly 3.14
</span>
So we can do 49 x 3.14 cm
Which this equals 153.86
Which rounding to the nearest tenth gets you:
153.9 cm is your area
I really do hope this helps!
Brainliest is always appreciated if you feel its deserved!
P.S. If you still struggle with this here is a link that helped me out a lot with this subject when i was learning it :))
https://www.khanacademy.org/math/basic-geo/basic-geo-area-and-perimeter/area-circumference-circle/v/...
