1: A triangle's angles add up to 180
180 - 130 = 50
50 / 2 = 25
x = 25
2: The sides given will be equal as this is a right-triangle
24 = 3(x + 2)
24 = 3x + 6
18 = 3x
x = 6
3: There is a lot of writing so I am unable to see the original triangle
(sorry *nervous sweat*)
4: A triangle's angles add up to 180, and the two sides given will be equal
5y = 20
y = 4
The angles in the bottom-most triangle are all equal to 60 as 180 / 3 = 60.
90 - 60 = 30.
x = 30
Have a nice day!
If this is not what you are looking for - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
The answer is $1720
215×8=1720
A polygon always has an equal amount of sides and angles :)
Answer:
The surface area of the prism is 8/3ft²
Step-by-step explanation:
To calculate the surface area of the prism we have to use the following formula:
a = area
w = side = 2/3 ft
h = height = 2/3 ft
l = length = 2/3 ft
a = 2 * (w * h) + 2 * (w * l) + 2 * (h * l)
we replace the values that we know
v = 2 * (2/3 ft * 2/3 ft) + 2 * (2/3 ft * 2/3 ft) + 2 * (2/3 ft * 2/3 ft)
v = 2 * 4/9ft² + 2 * 4/9ft² + 2 * 4/9ft²
v = 8/9ft² + 8/9ft² + 8/9ft²
v = 24/9ft²
v = 8/3ft²
The surface area of the prism is 8/3ft²
