Good idea to look up the formula for "surface area of a sphere" and to write it down for later reference. It is A=4 pi r^2, where r is the radius of the sphere.
If the given sphere has a diameter of 7 cm, what is the radius of this sphere?
Write your answer inside the parentheses, below:
Sphere surface area = 4 pi (r)^2, or (in this case), A = 4(3.14)( )^2
Answer:
33 inches per year
Step-by-step explanation:
In half a year, the sunflower grew 37 -20 1/2 = 16 1/2 inches. Your proportion is ...
(16 1/2 inches)/(1/2 year) = g/(1 year) . . . . . . . where g is the yearly growth
Multiplying by 1 year and simplifying, you can find g to be
g = (33/2 inches)/(1/2) = 33 inches
That is, the growth rate is 33 inches per year.
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<em>Comment on the solution technique</em>
I personally find a proportion to be unnecessary. When you want to find the rate of x per y, divide the amount of x you are given by the amount of y you are given.
Here, you are given a growth of 16 1/2 inches in 1/2 year, so you simply perform the division (16 1/2 inches)/(1/2 year) = 33 inches/year.
Answer:
Step-by-step explanation:
Step-by-step explanation:
Convert kilogram into gram first.
a:b = a/b
125:2000= 125/2000
If u divide u get
1/16
a:b = a/b
1/16= 1:16
Ratio is now found.
Answer:
220 Feet
Step-by-step explanation:
Side 1: 2(10*4)
Side 2: 2(5*4)
Side 3: 2(10*5)
Simplify:
Side 1: 80
Side 2: 40
Side 3: 100
Add:
80 + 40 + 100
120 + 100
220
