72 ÷ 2= 36
36 × 4= 144
144 ÷ 3= 48
If angle 2 and 1 are congruent then angle 2 should be 110° and other measures should be 70°
Answer:
486cm^2
Step-by-step explanation:
cube volume: 729cm^3
cube faces count: 6
How you calculate square area:
s(cm) * s(cm) or just s^2(cm^2)
s = side length
If you want to find out the side length of a cube by its volume. Then simply just remove the ^3 by taking the cubic root (also written ^(1/3))
729^(1/3) = 9
then just calculate the area like i showed earlier:
(9cm)^2 = 81cm^2
But that is only one side of a cube's 6 sides, so multiply by 6:
81cm^2 * 6 = 486cm^2
Hope i could help :D
Dont be scared to ask me questions..
Answer:
I'm glad you asked!
Step-by-step explanation:
The width is 3.
33 - 30 = 3.
So that gives your width as 3.
Answer:
90
Step-by-step explanation:
The centre is (-2,9) so the first part of the equation will be (x+2)^2 + (y-9)^2 and to get the second half, you know the point on the circle which you can use to find the radius. So the triangle formed would be 3 long, 9 high and using Pythagoras you can do:
![3^2+9^2=r^2](https://tex.z-dn.net/?f=3%5E2%2B9%5E2%3Dr%5E2)
9+81= ![r^2\\](https://tex.z-dn.net/?f=r%5E2%5C%5C)
90 = ![r^2](https://tex.z-dn.net/?f=r%5E2)
and this equation ends with r^2 so you can substitute that back into the equation so together it will be
90