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Gelneren [198K]
3 years ago
11

Find the surface area of a triangular pyramid.

Mathematics
1 answer:
rusak2 [61]3 years ago
6 0

Answer:

91in^2

Step-by-step explanation:

SA of base =  7x7 = 49in^2

SA of each triangle = 1/2 x 7 x 3 = 10.5in^2

SA of all 4 triangles = 10.5 x 4 = 42in^2

SA Total = 49 + 42.= 91inch^2

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Given: Circle O, AO=15, OK=5, and K is a point of tangency of AK. Find: measure of angle A
Inga [223]

Applying the tangent theorem and trigonometry ratio, the measure of angle A is: 19.5°.

<h3>What is the Tangent Theorem?</h3>

The tangent theorem states that if a line is tangent to a circle, the point at which the radius is drawn to the point of tangency is a right angle.

Thus, consider triangle AKO as a right triangle.

Therefore,

  • angle A = reference angle
  • Ok = 5 (opposite)
  • AO = 15 (hypotenuse)

Using the trigonometry ratio, SOH, we have:

sin A = opp/hyp

sin A = 5/15

sin A = 0.3333

A = 19.5°

Therefore, applying the tangent theorem and trigonometry ratio, the measure of angle A is: 19.5°.

Learn more about tangent theorem on:

brainly.com/question/9892082

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2 years ago
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#1 -2800, 10000

#2 -2800

Step-by-step explanation:

you simply just have to find the average around both mid points, and y equals up and down, so they want t know the average of the height

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3 years ago
Solve for x. Pls and thank you.
telo118 [61]

Answer:

x=48

Step-by-step explanation:

84 + 2x = 180 \\ 2x = 96 \\ x = 48

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I need help finding each measure in rhombus
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Rhombuses have acute and obtuse angles, so if it gives one just subtract it from 180
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