I need help! The cube's original side length is 4.5cm. What is the area of a cross section sliced perpendicular to the base?
1 answer:
Answer:
Step-by-step explanation:
If the cross section is cut perpendicular to the base, it will be like an upside down T where the _ is the base and the | is the cross section.
This means the measurements of the cross section will be the width × height.
Because this shape is a cube, we know these measurements will both be 4.5cm.
4.5 × 4.5 = 20.25
The area of the cross section is 20.25 square centimeters.
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Answer:
c. 2
Step-by-step explanation:
Given : X = No. of hours worked
No. of people work for the manager = 50
X = 3, 4 , 5 , 6 , 7, 8
P(X) = 0.1 , ? , 0.14 , 0.3 , 0.36 , 0.06
To Find : No. of people work for four hours
Solution : First understand the fact that sum of all probabilities is equal to 1
So, sum of all values of P(X) = 1
⇒
⇒
⇒
⇒
So, the probability of no. of people worked for 4 hours is 0.04.
⇒P(4)=0.04
Thus , To calculate no. of people work for four hours :
⇒ 2 no. of people work for four hours per shift .