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vredina [299]
3 years ago
6

Regular triangular pyramid has the slant height k=12 cm and lateral area AL = 198 cm2. Find the length of the base edge.

Mathematics
1 answer:
Shkiper50 [21]3 years ago
3 0
If s represents the edge length of the base, the lateral area is given by
  A = (1/2)*(3s)*(k)
We can substitute the given numbers and solve for s.
  198 cm² = (1/2)*(3s)*(12 cm)
  (198 cm²)/(18 cm) = s
  s = 11 cm

The length of a base edge is 11 cm.
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In exercises 8-10, write a system of linear equations that has the ordered pair as its solution. (-6, -2)
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Answer:

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Step-by-step explanation:

Given [Missing from the question]

(8).\ (-6,-2)\ \\ (9).\ (-12,18)\ \\ (10).\ (2,0)

Required

Write a system of linear equations

The solutions to this question is open and have different solutions

Solving (8) (-6,-2)

Let the equations be: x + y and 2x - y

x + y = -6 - 2

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2x - y = 2 * (-6) - (-2)

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So, the equations are:

x + y = -8 and 2x - y = -10

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3x - y = -54

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5 0
3 years ago
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muminat

Step-by-step explanation:

8 + g = 15

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Hope it will help :)

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