V pyramid = (1/3)*B*h where B is the area of the base
V = (1/3) * 12 * 16 * 7
V = 448 m^3
The measure of angle BC (m ∠BC) is 90°
<h3>Perpendicular lines</h3>
From the question, we are to determine the measure of angle BC
From the given information, we have that
B P ⊥ P C
This means line BP is <u>perpendicular</u> to line PC
The angle between two perpendicular lines is 90°
Hence, the measure of angle BC (m ∠BC) is 90°.
Learn more on Perpendicular lines here: brainly.com/question/138956
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Answer:
There are three basic trigonometric ratios: sine , cosine , and tangent .
Step-by-step explanation:
I5xI = 0
Divide 5 to both side.
IxI=0
x=0
TRiangles ABE and ACD are similar because BE and CD are parallel.
Therefore CD / BE = AD / AE
8 / BE = 16 / 10
BE = 8*10 / 16 = 5
Also, 16 / 10 = AC / AB = 20 / AB
AB = 10 * 20 / 16 = 12,5
Perimeter of ABE = 5 + 10 + 12.5
= 27.5 units (answer)
