The radius of a cylinder is 3x - 2 cm. the height of the cylinder is x + 3 cm. what is the surface area of the cylinder? use the formula a = 2πr^2 + 2πrh. a. 2π(3x^2 + 10x - 8) b. 2π(12x^2 + 7x - 2) c. 2π(12x^2 - 2x +13) d. 2π(12x^2 - 5x -2)

given that triangle abc is transformed two times to get triangle

a"b"c"

first abc is transformed in to a'b'c' as follows:

the coordinates of a are (1,-1) and transformed into a'(-1,1)

similarly b (4,-2) became b'(-4,2) and

c(7,-2) became c'(-7,2)

i.e. (x,y) becomes (-x,-y)

this is nothing but reflection about a point here origin.

thus first transformation is reflection on the origin.

next is exactly shifting 3 units down

source:

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