A sphere has a diameter of 8 cm. Which statements about the sphere are true? Select two choices. Recall the formula S A = 4 pi r squared.
The sphere has a radius of 4 cm.
The sphere has a radius of 16 cm.
The surface area of the sphere is 32 pi centimeters squared.
The surface area of the sphere is 64 pi centimeters squared.
The surface area of the sphere is 256 pi centimeters squared.

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step-by-step explanation:

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

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step-by-step explanation:

( - 4 , -7 )

all the lines must parallel  

step-by-step explanation:

coordinates of c = ( - 1 , 2 )

3 units left = ( -4 , 2 )

9 units down = ( - 4 , 11 )