Answer:
c = 
km
Step-by-step explanation:
Here's the required formula to find the missing side of triangle by pythagoras theorem :
a = 20 km- b = 21 km
- c = ?
Substituting all the given values in the formula to find the third side of triangle :
Hence, the length of missing side of triangle is 29 km.
I think the first one might be 18 second might be 10
the answer will be 9 each side because it has 5 sides so if you divide 45 by 5 sides you will get 9 as your anser pls give me good rating and a thank
Answer:
5832 ways
Step-by-step explanation:
Since the circle has 8 sectors and there is 4 colour,
Assuming the sectors are numbered 1 to 8,
Sector 1 : can be coloured with any of the 4 colour in 4 ways
Sector 2 can be coloured with any of the remaining 3 colours in 3 ways
Sector 3 in 3 ways without using the colour in sector 2
Sector 4 in 3 ways without using the colour in sector 3
Sector 5 in 3 ways without using the colour in sector 4
Sector 6 in 3 ways without using the colour in sector 5
Sector 7 in 3 ways without using the colour in sector 6
Sector 8 in 2 ways without using the colours in sector 1 and 7
Number of ways of colouring = 4*3*3*3*3*3*3*2 = 5832 ways
As the exterior angles always add up to 360, you can find the number of sides by dividing 360 by the measure of your exterior angle, 30. This gives you 360/30=12, meaning your polygon has 12 sides.
