A)
Because the sum of angles in a triangle must equal 180° we can say:
62+α+90=180
α+152=180
α=28°
b)
Since all sides have equal length, all angles must have equal measure. (This is an equilateral triangle). And again, because the sum of the angle must be 180° we can say:
b+b+b=180
3b=180
b=60°
1 24/25
1.96= 196/100
196/100= 49/25
49-25= 24
1 24/25
A is your answer
We can cross multiply using x/70=30%/100
Solving it we get:
100x=2100 (70 times 30)
x=21
So we get a, 21 as your answer.
I hope this helped!
3. Is alternate interior angles
4. Supplementary angles
5. Exterior angles
6. 76
7. 75
8. 114
9. 130
Cone and cylinder both have round bases
