A home cleaning service takes more time to clean larger spaces. The table shows the number of minutes it takes for the service t
1 answer:
The time required to clean 200 square feet will be 80 minutes. Option B is correct.
<h3>What is the surface area?</h3>The total land area of all the faces of a three-dimensional object is its surface area. When we wish to wrap something in real life, we employ the notion of surface areas of distinct things.
Let x be the cleaning time for the 200 square feet area;
From the table, it is observed that for a 1 sq. foot area the time needed to clean will be 0.4 minutes.
1 square feet = 0.4 minute
200 square feet = 200 × 0.4
200 square feet = 80 minute
The time required to clean 200 square feet will be 80 minutes.
Hence, option B is correct.
The table is attached in the attachment.
To learn more about the surface area, refer to the link;
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Answer:
Pendulum will swing by an angle 0.666π
Step-by-step explanation:
We have given arc =
And length of the pendulum l = 150 cm
Length of the pendulum will be equal to radius of the pendulum so r = 150 cm
Arc is given by
So
So pendulum will swing by an angle 0.666π