What is the surface area of the triangular prism? A. 175cm^2
B. 196cm^2
C. 216cm^2
D. 222cm^2

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

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1

x = 1/2

step-by-step explanation:

hope this !