Every surface of the block shown will be painted, except for one of the bases. How many square units will be painted? (Hint... total surface area with only 1 base.)

Surface area of 5 sides = 51.2 cm²

Step-by-step explanation:

Given:

Side of cube = 3.2 cm

Find:

Surface area of 5 sides

Computation:

Surface area of 5 sides = Surface area of cube - Surface area 1 side

Surface area of 5 sides = 6a² - a²

Surface area of 5 sides = 6(3.2)² - (3.2)²

Surface area of 5 sides = 6(10.24) - 10.24

Surface area of 5 sides = 6a² - a²

Surface area of 5 sides = 61.44 - 10.24

Surface area of 5 sides = 51.2 cm²

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

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