A hockey puck has a diameter of 3 inches.
3 inches
What is the approximate area of the top of the hockey puck?
A. 7.1 in.2
B. 9.4 in.
C. 18.8 in.2
D. 28.3 in.2

The answer to your question is 7.1 in²

Step-by-step explanation:

Data

diameter = 3 in

Area = 2

Process

1.- Calculate the radius

radius = diameter/2

-Substitution

radius = 3/2

-result

radius = 1.5 in

2.- Calculate the area

Area = πr²

-Substitution

Area = (3.14)(1.5)²

-Simplification

Area = (3.14)(2.25)

-Result

Area = 7.065 in² ≈ 7.1 in²

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

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