Answer:
d = 69°, e = 32°, f = 79°
Step-by-step explanation:
the 69° angle and d are vertical angles, so d is 69°.
same with e and the 32° angle, so e is 32°.
the 69° angle and f are on a straight angle, which means they, and e, add up to 180° when combined.
69 + 32 = 101
180 - 101 = 79
so f is 79°.
Answer: 2,849.6 mm^3
Step-by-step explanation:
Volume of a cone : 3.14 • r^2 • h/3
h being height and r being radius
now substitute
3.14 • 5.5^2 • 90/3
now solve
3.14 • 30.25 • 30
2849.55
round to tenths
2849.6
