Answer:
Using 3.14 for pi
835.24 cm^2
Using the pi button for pi
835.6636459 cm^2
Step-by-step explanation:
The surface area of a cylinder is given by
SA = 2 pi r^2 + 2 pi r h
= 2 * pi ( 7)^2 + 2 pi ( 7) * 12
= 98 pi + 168 pi
=266 pi
Using 3.14 for pi
835.24 cm^2
Using the pi button for pi
835.6636459 cm^2
Answer
Yes
Step-by-step explanation:
(8 roundtrips)(89 miles)(28 days) = 19,936
3 yards/3 walls = 1 yard per wall
Area = Length * Width
Area = 1 * 1 = 1 square yard
Answer:
29% . . . or . . . 290‰
Step-by-step explanation:
The ratio of weight of salt to weight of water was ...
(14.5 g)/(50 g) = 29/100 = 29%
Sometimes, salinity is expressed as "parts per thousand".
29/100 = 290/1000 = 290‰
_____
Use of the abbreviation "PPT" for "parts per thousand" is not recommended, as that abbreviation has several different interpretations, including "parts per trillion."
