HELP WILL MARK U BRAINLIEST

284.52 SQ. FT.

Step-by-step explanation: First lets find the area of the rectangle

area of a rect. = l x b= 12 x 19= 228 sq. ft.

Now lets find the area of the remaining circle

area of a circle= pi x r^2

pi= 3.14

r=?

to find r we can take the diameter of the circle i. e. the 12 ft. side on the left side of the rect.

so, diameter= 12 ft.

radius= diameter/2= 12/2= 6 ft.

Now lets solve the remaining semi circle

if area of circle= pi x r^2

then area of semi circle= 1/2 x pi x r^2 or pi x r^2/2

=3.14 x 6^2/2= 3.14 x 36/2= 113.04/2= 56.52 ft. sq.

Now, area of rectangle + area of semicircle= 228+56.52= 284.52 sq. ft.

PLEASE RATE 5 STARS AND VOTE AS BRAINLIEST:)

(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)(^o^)

t = 3

step-by-step explanation:

put t = 3 in this expression :

(3²-1)(3²-2)(3² - 3)(3² - 4) = 8×7×6×5 = 56×30 = 1680