Answer:
∠ EAC = 50°
Step-by-step explanation:
Since AE is an angle bisector of ∠ BAC , then
∠ EAC = ∠ BAE , that is
3x - 10 = x + 30 ( subtract x from both sides )
2x - 10 = 30 ( add 10 to both sides )
2x = 40 ( divide both sides by 2 )
x = 20
Then
∠ EAC = 3x - 10 = 3(20) - 10 = 60 - 10 = 50°
Every equilateral triangle is also anisosceles triangle, so any two sides that are equal have equal opposite angles. Therefore, since all three sides of an equilateral triangle are equal, all three angles are equal, too.
<span>Converting within the Metric System - Monterey Institute
</span>
Answer: 628
Step-by-step explanation:
2πr^2+2πrh
2(3.14)(5)^2+2(3.14)(5)(15)
2(3.14)(25)+2(3.14)(75)
2(78.5)+2(235.5)
157+471
628