Age c) The group is planning to build a fence around the garden. How many yards of fencing materials do they need for the fence?
1 answer:
Answer:
Step-by-step explanation:
The perimeter is obtained by taking the sun of the fence :
Outer fencing :
Let's obtain b :
From Pythagoras :
b² = 15² - 12²
b = sqrt(225 - 144)
b = 9
Outer fencing = 2(12+6) + 2(8+9)
= 2(18) + 2(17)
= 36 + 34
= 70
Inner fencing :
(8 + 9 + 12 + 6 + 15 + 10) = 60
(70 + 60) = 130 yards
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Answer:
Probability that a student chosen randomly from the class plays basketball or baseball is or 0.76
Step-by-step explanation:
Given:
Total number of students in the class = 30
Number of students who plays basket ball = 19
Number of students who plays base ball = 12
Number of students who plays base both the games = 8
To find:
Probability that a student chosen randomly from the class plays basketball or baseball=?
Solution:
---------------(1)
where
P(A) = Probability of choosing a student playing basket ball
P(B) = Probability of choosing a student playing base ball
P(A \cap B) = Probability of choosing a student playing both the games
<u>Finding P(A)</u>
P(A) =
P(A) = --------------------------(2)
<u>Finding P(B)</u>
P(B) =
P(B) = ---------------------------(3)
<u>Finding </u>
P(A) =
P(A) = -----------------------------(4)
Now substituting (2), (3) , (4) in (1), we get