4 years ago

Can someone help maths

1 answer:

4 0

First find angle EBC.
The are for a triangle is 180 degrees.
It is a right triangle and has a right angle.
180 - (90 + 50)
180 - 140
angle EBC IS 40
NOW FIND X
The line is 180 degrees.
180 -40 = 140
X = 140 DEGREES

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<h2>○=> <u>Correct answer</u> :</h2><h2> $\color{plum} = \tt\bold{30 \: cubic \: inches}$ </h2><h3>○=> <u>Steps to derive correct answer</u> :</h3>

Given :

Base area of Ms. Jones decorative pyramid = 6 inches²

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We know that :

$\color{hotpink}\tt \: volume \: of \: a \: triangular \: pyramid\color{plum} \tt \: = \frac{1}{3}Bh$

Volume of the decorative pyramid :

$=\tt \frac{1}{3} \times 15 \times 6$

$=\tt \frac{15 \times 6}{3}$

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