Helena wants to paint a box in the shape of a cube with sides that are 18 inches long. what is the surface area that Helena will
1 answer:
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Answer:
Step-by-step explanation:
<u>Scientific notation</u>
where:
is any positive or negative <u>whole number</u>.
To convert a number into scientific notation, <u>move</u> the decimal point to the <u>left or right</u> until there is <u>one digit</u> to the left of the decimal point.
The number of times you have moved the decimal point is .
- If the decimal point has moved to the <u>left</u>,
- If the decimal point has moved to the <u>right</u>,
To convert 500,000,000,000 into scientific notation, move the decimal point <u>11 places to left</u>, so a = 5. As we have moved the decimal point 11 places to the left, the exponent "n" is 11 and is <u>positive</u>.
To convert 0.00000000005 into scientific notation, move the decimal point <u>11 places to the right</u>, so a = 5. As we have moved the decimal point 11 places to the right , the exponent "n" is 11 and is <u>negative</u>.
Learn more about scientific notation here:
Answer:
Area: 7850 square cm
Perimeter: 314 cm.
Step-by-step explanation:
The area is . With r=50,
=2500π which is about (2500)(3.14)=7850.
The perimeter is which is the same as (diameter)(π). The diameter is 100, so
which is about (100)(3.14)=314.