Answer:
91.1 cubic inches to 1 dp
Step-by-step explanation:
4.5 X 4.5 X 4.5 = 91.125 cubic inches
or
4.5^3 = 91.125 cubic inches
Answer:
The bottom one ....see below
Step-by-step explanation:
Using reference angle of pi/8 and half angle trig identity:
cos ( angle/2) = -sqrt (1 + cos (angle) /2)
cos ( pi/4 / 2) = - sqrt (1+ cos ( pi/4)/2)
<u> cos (pi/8)</u> = - sqrt (1 + sqrt (2) / 2)
= - sqrt (1 + sqrt 2) / sqrt 2 rationalize the denominator
= - sqrt ( sqrt 2 + 2) / 2
re arrange to
- sqrt ( 2 + sqrt2) / 2 the fourth answer
Answer:
side measure = 9 in
Step-by-step explanation:
volume of a cube: 
where V is the volume and s is one side of the cube
Given volume = 729 in³
![\implies s=\sqrt[3]{729}](https://tex.z-dn.net/?f=%5Cimplies%20s%3D%5Csqrt%5B3%5D%7B729%7D)
Answer:
44 months
Step-by-step explanation:
If you subtract 24,000 by 2,000 it equals 22,000 then you divide that by 5 and have 44
