The diameter of a large sphere is 4 times the diameter of a small sphere. The surface area of the large sphere is how many times
1 answer:
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Pythagorean theorem is 
and using that sin is opposite/hypotenuse, you can find the third side of the triangle.
now you know adjacent is 60, so cos=60/61
and using that sin is opposite/hypotenuse, you can find the third side of the triangle.
now you know adjacent is 60, so cos=60/61
Answer:
At these rates Sydney read 10 pages per hour more than Zander.
Step-by-step explanation:
Zander read pages in
of an hour.
Therefore, pages read by Zander in 1 hour =
=
=
= 55 pages per hour
Sydney read pages in
of an hours.
Pages read by Sydney in 1 hour =
=
= 65 pages per hour
Therefore, number of pages read more by Sydney as compared to Zander,
= 65 - 55
= 10 pages per hour
At these rates Sydney read 10 pages per hour more than Zander.