You can use the pythagoras’ theorem and just look at one right triangle.
The dimensions for one of the right triangles is (x/2), 8, and square root of 80.
a^2 + b^c = c^2
when c is the square root of 80.
Plug everything in
(x/2)^2 + 8^2 = (square root of 80)^2
That is equivalent to
((x^2)/4) + 64 = 80
Solve for x
((x^2)/4) = 16
Multiple by 4 on each side
x^2 = 64
Take the square root and you have you’re final answer
x = 8
I learned this trick months ago.
Step-by-step explanation:
ratios are kinda like fractions
5/15 could be used as 2/6 if you criss cross it 5x6=30 and 15x2=30
Here are a list of fractions (just turn them into ratios) that would work
1/3 1:3
2/6 2:6
3/9 3:9
4/12 4:12
5/15 5:15
6/18 6:18
7/21 7:21
8/24 8:24
9/27 9:27
10/30 10:30
(5400 bulbs)/(72 bulbs/min) = 75 min
It would take 75 minutes for the machine to make 5400 light bulbs.
Answer:
12
Step-by-step explanation:
Volume= pi x radius squared x height
substitiute values
540π= π x r^2 x 15
divide 540π by π and 15
so thats 36= radius squared
so the radius is 6 as 6 squared is 36
so the diameter is radius x2
so the answer is 12