If the circle below is cut from the square of plywood below, how many square inches of plywood would be left over? Use π = 3.14,
1 answer:
Answer:
86in²
Step-by-step explanation:
Find the complete question attached
Area of the circle = πr²
Area of the square = L²
Length of the side of the square
r is the radius of the circle
r = L/2 = 20/2 =10in
Given
Length of the side of the circle = 20in
Area of the square = 20²
Area of the square = 400in²
Area of the circle =π(10)²
Area of the circle = 3.14(100)
Area of the circle= 314in²
Amount of plywood left over = 400in²-314in² = 86in²
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Answer:
True.
Step-by-step explanation:
It is because it is in the form and this equals
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Why it is in that form: well comparing , we have
. Testing, plug in those values:
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This has the squared form of .
Test if you like:
Use foil to expand:
First: x(x)=x^2
Outer: x(1)=x
Inner: 1(x)=x
Last: 1(1)=1
---------------Add together
It does indeed equal.