Question: Write an algebraic expression that represents how many total cars there are on the Toyota car lot if there are r rows
1 answer:
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Answer:
33.15 square inches.
Step-by-step explanation:
Given:
Length of the minute hand is 11.25' from the center of the clock to the tip of the hand.
<u>Question asked:</u>
What is the area swept out by the minute hand as it moves 5 minutes of time?
Solution:
<u><em>As length of the minute hand is '11.25' from the center of the clock to the tip of the hand means radius of the circle, r = 11.25 inches.</em></u>
First of all we will find area of circle swept by the minutes hand,
When minute hand moves 60 minutes, it makes one circle of area 397.77 square inches.
By using<u> unitary method</u>, we will calculate area swept by minute hand in 5 minutes:-
In 60 minutes, area swept = 397.77 square inches
In 1 minute, area swept =
In 5 minutes, area swept =
Thus, the area swept out by the minute hand is 33.15 square inches when it moves 5 minutes.
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Factorise a² - b² :
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Crossed out common factors, (x + a) :
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