Answer:
52 sides
Step-by-step explanation:
The only way I know how to do this is to create one fraction which is a combination of 2 steps used when 1 of the interior angles is known.
Formula
360/(180 - 9000/s ) = s
Multiply denominator and numerator on the left by s.
360 * s
======= = s
s* (180 - 9000/s)
Remove the brackets on the denominator
360s
================ =s
180s - 9000
Cancel the numerators s's.
360 / (180s - 9000) = 1
Multiply both sides by 180s - 9000
360 =180s - 9000
Add 9000 to both sides
360 + 9000 = 180s
9360 = 180s
Divide by 180
9360/180 = 180/180 s
s = 52
Answer: B. 0.54
Step-by-step explanation:
1. 229 boys in total
2. 124 go to drama
3 . therefore![\frac{124}{229}](https://tex.z-dn.net/?f=%5Cfrac%7B124%7D%7B229%7D)
![\frac{124}{229}](https://tex.z-dn.net/?f=%5Cfrac%7B124%7D%7B229%7D)
=0.54
Answer:
Ratio of the volume of the triangular prism and the volume of cuboid = 3 : 20
Step-by-step explanation:
Volume of a triangular prism = Area of the triangular base × Height
=
× Height
=
× 9
= 90 cm³
Volume of the rectangular prism or cuboid = Length × Width × Height
= 6 × 5 × 20
= 600 cm³
Therefore, ratio of the volumes of triangular prism and cuboid = ![\frac{90}{600}](https://tex.z-dn.net/?f=%5Cfrac%7B90%7D%7B600%7D)
= ![\frac{3}{20}](https://tex.z-dn.net/?f=%5Cfrac%7B3%7D%7B20%7D)
= 3 : 20
Isn't it 27? Because if you went backwards 300-219 is 81 and 81 divided by 3 is 27. if you went forwards, 27 times 3 is 81 and 300 reduced by 81 is 219.