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rodikova [14]
3 years ago
5

How do you find the radius of a Tetrahedron?

Mathematics
1 answer:
BigorU [14]3 years ago
6 0

Answer:

The center of the tetrahedron divides each of the four heights (or medians) in the ratio 1:3 (in an equilateral triangle the corresponding ratio is 1:2). The smaller part is also the radius of the inscribed sphere. Therefore the radius of this sphere is one quarter of the height or 9 in your case.

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Please its really urgent, step by step working out
Karo-lina-s [1.5K]

Answer:

70.99

Step-by-step explanation:

Use Pythagorean Theorem to find the shortest distance.

80^2-50^2=3900

Square rt= 62.44

Subtract by 15

47.44

Next find half of the circular path it is (3.14 x 15)/2

23.55

Add 47.44+23.55=70.99

Hope this is correct

8 0
3 years ago
Explain the answer to 4 + (+9)
yaroslaw [1]
I believe that it would be 13, unless you were trying to make the 9 negative. Hope that helps.
4 0
3 years ago
FICA stands for
Alja [10]

Answer:

A.Federal insurance Contributions Act

Step-by-step explanation:

Please mark me as brainleist

3 0
3 years ago
April shoots an arrow upward at a speed of 80 ft/sec from a platform of 25 ft. High. The pathway of the arrow can be represented
soldi70 [24.7K]

Answer:

125feet

Step-by-step explanation:

Given the equation that modeled the height expressed as h = -16t^2 + 80t + 25, where h is the height and t is the time in seconds.

The arrow reaches the maximum height at dh/dt = 0

dh/dt = -32t + 80

0= -32t+80

32t = 80

t = 80/32

t = 2.5secs

substitute t = 2.5 into the formula;

h = -16t^2 + 80t + 25

h = -16(2.5)^2 + 80(2.5) + 25

h = -16(6.25)+225

h = -100+225

h = 125

Hence the maximum height the arrow reaches is 125feet

4 0
3 years ago
Quadrilaterals Graphic Organizer
Taya2010 [7]

#Trapezoid

  • One pair of opposite sides of parallel
  • All angles are unsimilar and sum of angles are 360°.

#Parallelogram

  • Two pair of opposite sides are parallel and same.
  • Sum of opposite angles is 180°.

#Rhombus.

  • All sides are same
  • Sum of opposite angles are 180

#Rectangles:-

  • Opposite sides are parallel and same.
  • All angles are 90°.

#Square:-.

  • All sides are same.
  • all angles are same and 90°
6 0
3 years ago
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