The formula of area of circle is: A = πr^2 or A = (π/4) d^2 [[Note: You can choose between the two formulas. Just be careful on using the correct formula as it depends whether the given is radius or diameter. In your case, since we are given a diameter, let's use the 2nd formula. ]]
Simply substitute 8 on the formula.
A = (π/4) (8)^2
A= 50.26548246
but this is not yet the answer. The formula we used is for the whole circle. The shaded part of the shape is only the half of it. Therefore, the A value the we solved must be divided to 2 to have the area of the shaded part.
Final answer: 25.1327 [[ Note: Please put the corresponding unit for the answer. ]]
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Answer:
Step-by-step explanation:
The formula of area of circle is: A = πr^2 or A = (π/4) d^2 [[Note: You can choose between the two formulas. Just be careful on using the correct formula as it depends whether the given is radius or diameter. In your case, since we are given a diameter, let's use the 2nd formula. ]]
Simply substitute 8 on the formula.
A = (π/4) (8)^2
A= 50.26548246
but this is not yet the answer. The formula we used is for the whole circle. The shaded part of the shape is only the half of it. Therefore, the A value the we solved must be divided to 2 to have the area of the shaded part.
Final answer: 25.1327 [[ Note: Please put the corresponding unit for the answer. ]]