Answer:
58cm squared
Step-by-step explanation:
Ok so what we first want to do is find out the total area of that rectangle.
The way we do this is by multiplying the width x height which in this case is 10 cm and 7 cm.
This gives us 70 cm as the total area of the rectangle if the circular hole wasn't there. Now we need to find the area of the circle.
The way we do this is by taking the circle and finding the radius. The radius is shown as 2cm.
Now the formula to find the area of a circle is
which means it is about 3.14 multiplied by r squared.
R squared in this problem is going to be 2 x 2 which is 4.
Now we just do 3.14 times 4 which gives us about 12.
What we do next is subtract 12 from the total area of the rectangle which is 70.
This gives us 58cm squared as an answer.
Hope this helped ! !
<3
Step-by-step explanation:
did it gives which answer goes to the letter
Answer:
<h3>There are 100 girls in the school</h3>
Step-by-step explanation:
Let the total number of people be x
To find the number of girls in the class we must first find the total number of people in the class
First find the total parts
That's
2 + 5 = 7
2/7 of the total number of people are boys
So we have
2/7 × x = 40
Multiply through by 7
2x = 280
Divide both sides by 2
x = 140
There are 140 people in the school
Finding the number of girls we have
5/7 × 140
= 100
There are 100 girls in the school
Hope this helps you
Answer:
the answer is C
Step-by-step explanation:
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