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2 years ago

PLZ HELP I DONT UNDER STAND!!

Mathematics

1 answer:

mart [117]2 years ago

4 0

Answer:

Explanation:

Cube A surface area is : 2x2x6 (because there are 6 faces) = 24

Cube B surface area is 4x4x6 = 96

The surface area of the cube B isn't the twice of cube A's surface area

Now the volumes :

Cube A volume is 2x2x2 = 8

Cube B volume is 4x4x4= 64

Cube B's volume isn't the twice of cube A's volume

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"Rebecca walks 100 feet in a straight line. She then turns 20 degrees to her left and walks another 100 feet, and then turns 20

iragen [17]

Answer:

1,800 ft

Step-by-step explanation:

Rebecca will walk in the pattern of a regular polygon with 'n' sides and internal angles of 160 degrees (180 at a straight line - 20 degrees from each turn).

The equation that describes the internal angle of a regular polygon is:

$A = \frac{(n-2)*180}{n}$

For A = 160 degrees:

$160n=(n-2)*180\\(180-160)n=360\\n=18\ sides$

If each side is 100 ft long, the total distance that Rebecca has walked is:

$d = 18*100\\d=1,800\ ft$

She walked 1,800 ft.

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