Calculate the area or this figure to the nearest tenth. use 3.1 to approximate

Since we know that the radius of the semicircle is 4 (8/2), we can solve by doing π8^2/2 = 3.1*64/2 = 198.4/2 = 99.2

The area of the triangle is 6*8/2 = 24

24 + 99.2 = 123.2 ft^2

step-by-step explanation:

the ratio of red paint to blue paint is always 9/7. that means that, whatever x's value, (4x+12)/(4x-4) has that same ratio. so, set up an equation and cross-multiply to solve for x:

9/7 = (4x+12)/(4x-4)

9(4x-4) = 7(4x+12)

36x - 36 = 28x + 84

8x - 36 = 84

8x = 120

x = 15

y=sec x is the correct answer

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