Answer:
Below in bold.
Step-by-step explanation:
(a) Using the Pythagoras theorem:
30^2 = 21^2 + p^2
p^2 = 30^2 - 21^2 = 459
p = √459
= 21.4 cm to nearest tenth.
(b) cos P = 21/30 = 0.70
m < P = 45.57 degrees to nearest hundredth.
C. 14.14 cu in.
V=4/3(3.14)r^3
V=4/3 (3.14)1.5^3
V=14.14
Answer:
2:3
Step-by-step explanation:
divide both 12 and 18 by gcm, which is 6