Asked by Louis
Your hole punch makes holes in your that have diameter of 4^-1 inch.
a.Write an expression for the area of one punched hole. Use the formula for the area
of a circle A=:r^2.
(: is pi sign)
b.Your hole punch makes three holes in a page . Write an expression for the total
area punched out of one sheet of paper.
a.Write an expression for the area of one punched hole. Use the formula for the area
of a circle A=:r^2.
(: is pi sign)
b.Your hole punch makes three holes in a page . Write an expression for the total
area punched out of one sheet of paper.
Answers
Answered by
Rasheda
a). 4^(-1) is the same as 1/4. Since this is the diameter, you divided it by the 2 to get the radius. So the radius is 1/8. Now the expression is:
A= pi*(1/8)^2 or A=(1/64)*pi
b). In part a, the expression is for the area of one punched hole. Since you have three punched holes now, you multiply the expression in part A by 3. So now the expression is: A=3pi*(1/8)^2 or A=(3/64)*pi
A= pi*(1/8)^2 or A=(1/64)*pi
b). In part a, the expression is for the area of one punched hole. Since you have three punched holes now, you multiply the expression in part A by 3. So now the expression is: A=3pi*(1/8)^2 or A=(3/64)*pi
Answered by
Louis
Thank you it help a lot
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