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I need help. I'm desperate. Find the area of the shaded region, round to the nearest tenth. I will give brainliest
the answer is NOT 17.4

I Need Help Im Desperate Find The Area Of The Shaded Region Round To The Nearest Tenth I Will Give Brainliest The Answer Is NOT 174 class=

Sagot :

ANSWER

A. (243pi+162) ft^2

EXPLANATION

The area of the shaded region is the sum of the area of the major sector and the area of the isosceles triangle.

Area of major sector

[tex]=\frac{360-90}{360}[/tex] × [tex]\pi[/tex] × [tex]18^2[/tex]

[tex]=243\pi ft^2[/tex]

The area of the isosceles triangle is calculated using the formula;

[tex]=\frac{1}{2}r^2sin(0)[/tex]

[tex]=\frac{1}{2}[/tex] × [tex]18^2[/tex] [tex]sin(90)[/tex]

[tex]=162ft^2[/tex]

The area of the shaded region

[tex]=(243\pi +162)ft^2[/tex]

The correct answer is A.