# Above Earth

To what height must a boy be raised above the earth in order to see one-fifth of its surface.

Result

h =  4252 km

#### Solution:  Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Showing 0 comments: Be the first to comment! #### To solve this verbal math problem are needed these knowledge from mathematics:

Need help calculate sum, simplify or multiply fractions? Try our fraction calculator. Pythagorean theorem is the base for the right triangle calculator.

## Next similar examples:

1. Spherical cap 4 What is the surface area of a spherical cap, the base diameter 20 m, height 2.5 m? Calculate using formula.
2. Spherical cap What is the surface area of a spherical cap, the base diameter 20 m, height 2 m.
3. Fit ball What is the size of the surface of Gymball (FIT - ball) with a diameter of 65 cm?
4. Theorem prove We want to prove the sentence: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?
5. Sphere cuts At what distance from the center intersects sphere with radius R = 56 plane, if the cut area and area of the main sphere circle is in ratio 1/2.
6. Circle annulus There are 2 concentric circles in the figure. Chord of larger circle 10 cm long is tangent to the smaller circle. What are does annulus have?
7. Sphere - parts Calculate the area of a spherical cap, which is part of an area with base radius ρ = 9 cm and a height v = 3.1 cm.
8. Hemispherical hollow The vessel hemispherical hollow is filled with water to a height of 10 cm =. How many liters of water are inside if the inside diameter of the hollow is d = 28cm?
9. Euclid2 In right triangle ABC with right angle at C is given side a=27 and height v=12. Calculate the perimeter of the triangle.
10. Tetrahedron Calculate height and volume of a regular tetrahedron whose edge has a length 18 cm.
11. Spherical cap Place a part of the sphere on a 4.6 cm cylinder so that the surface of this section is 20 cm2. Determine the radius r of the sphere from which the spherical cap was cut.
12. Observatory Observatory dome has the shape of a hemisphere with a diameter d = 10 m. Calculate the surface.
13. Holidays - on pool Children's tickets to the swimming pool stands x € for an adult is € 2 more expensive. There was m children in the swimming pool and adults three times less. How many euros make treasurer for pool entry?
14. Vector 7 Given vector OA(12,16) and vector OB(4,1). Find vector AB and vector |A|.
15. ABS CN Calculate the absolute value of complex number -15-29i.
16. Coefficient Determine the coefficient of this sequence: 7.2; 2.4; 0.8
17. Algebra X+y=5, find xy (find the product of x and y if x+y = 5)