Answer:
The area which would be painted grey will be "47.7812 ft²".
Step-by-step explanation:
The given values are:
Radius of circle, r = 5.4 feet
Value of pi, π = 3.14
As we know,
Area of Semicircle = 
On putting the values in the above formula, we get
= 
= 
= 
=
Answer:
=−10x+45
Step-by-step explanation:
5(x−3(x−3))
=−10x+45
the other asnwers dont make any sense. but just take my word for it.
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Note:
The area of a circle with radius r is πr².
An entire circle has a central angle of 360°.
For the sector with radius = (3+4) = 7cm and a central angle of 120°, the area is

For the sector with radius = 3 cm and a central angle of 120°. the area is

The area of the shaded sector (see the figure) is

Answer: