# Above Earth

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

**Result****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 example are needed these knowledge from mathematics:

## Next similar examples:

- Spherical cap

What is the surface area of a spherical cap, the base diameter 20 m, height 2 m. - Fit ball

What is the size of the surface of Gymball (FIT - ball) with a diameter of 65 cm? - Theorem prove

We want to prove the sentense: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started? - 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? - 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. - 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. - 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? - 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. - Tetrahedron

Calculate height and volume of a regular tetrahedron whose edge has a length 19 cm. - Isosceles triangle

The leg of the isosceles triangle is 5 dm, its height is 20 cm longer than the base. Calculate base length z. - Observatory

Observatory dome has the shape of a hemisphere with a diameter d = 10 m. Calculate the surface. - 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? - Algebra

X+y=5, find xy (find the product of x and y if x+y = 5) - Expression with powers

If x-1/x=5, find the value of x^{4}+1/x^{4} - ABS CN

Calculate the absolute value of complex number -15-29i. - Coefficient

Determine the coefficient of this sequence: 7.2; 2.4; 0.8 - Vector 7

Given vector OA(12,16) and vector OB(4,1). Find vector AB and vector |A|.