Answer:
8 sqrt{10
Step-by-step explanation:
the rule of its surface area is
area of base which is s^2. s being the side of the square
s^2+2*s* sqrt{(s^2/4)+9}
so it is equal to
(2)^2+2*2*sqrt{(2^2/4)+9}
which will give u ur final answer
Answer:
80 miles
Step-by-step explanation:
The map scale compares the distance between two points on the map with the corresponding distance on the ground.
That is,
The formula makes it pretty easy to solve!
- map scale is <em>1 inch : 20 miles</em>
- distance on map is <em>4 inches</em>
- Let's say, the corresponding distance on the ground is <em>x miles.</em>
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Substituting these values in the above mentioned formula:
<em>cross multiplying:</em>
<u>That makes the actual distance 80 miles!</u>
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<h3>ALTER</h3>
You can also use simple unitary method here:
1 inch on the map = 20 miles on the ground
∴ 4 inches on the map = 4 × 20 miles on the ground
<u>= 80 miles on the ground</u>
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65 miles per hr....
there is 60 minutes in 1 hr
so u r driving 65 miles in 60 minutes....so if u want per minute, then we must divide
65/60 = 1.08 rounded to the nearest tenths is 1.1 mile per minute <=