Answer:
<h2>a = 52°</h2><h2>b = 38°</h2>Step-by-step explanation:
We know:
Angles in a triangle sum to 180°.
Therefore:
52° + 90° + b = 180°
142° + b = 180° |-142°
<h2>b = 38°</h2><em>(look at the picture)</em>
a + b = 90° ⇒ a + 38° = 90° |-38°
<h2>a = 52°</h2>or
Angles 52° and a, are alternate interior angles. Therefore they are congruent.
<h2>a = 52°</h2>
Hi there! :)
Answer:
Use the formula V = 1/3(bh) to solve for the volume of the cone where b = πr² where π ≈ 3.14:
Find the area of the base:
b = π(7)²
b = 49π
b = 153.86 mm²
Find the volume:
V = 1/3(153.86 · 7)
V = 1/3(1077.02)
V = 359.006 ≈ 359.01 mm³.