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inessss [21]
3 years ago
6

please help me! A cylindrical propane tank is filled for a cost of $0.03 per in3. The tank has a radius of 24 in. and a height o

f 60.5 in. What is the cost to fill the propane tank? Use 3.14 to approximate pi.
Mathematics
1 answer:
Sveta_85 [38]3 years ago
7 0
Step one on this problem would be to write the equation you need. V= \pi r^2 h \\ and  \\ P=.03V Pwould be Price, r your radius, h your hight, and V your volume. now lets plug them in 109,422.72= (3.14) (24)^2 (60.5)  \\ 3282.6816=(.03)(109,422.72) therefor the answer would be $3282.68 or $3282.69 depending on if you always round up with money or not in your class (in the real world this is common). if you need help understanding plase let me know.
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spayn [35]

Answer:

74.0°

Step-by-step explanation:

In triangle JKL, k = 4.1 cm, j = 3.8 cm and ∠J=63°. Find all possible values of angle K, to the  nearest 10th of a degree

Solution:

A triangle is a polygon with three sides and three angles. Types of triangles are right angled triangle, scalene triangle, equilateral triangle and isosceles triangle.

Given a triangle with angles A, B, C and the corresponding sides opposite to the angles as a, b, c. Sine rule states that for the triangle, the following holds:

\frac{a}{sin(A)}=\frac{b}{sin(B)}=\frac{c}{sin(C)}

In triangle JKL, k=4.1 cm, j=3.8 cm and angle J=63°.

Using sine rule, we can find ∠K:

\frac{k}{sin(K)}=\frac{j}{sin(J)}   \\\\\frac{4.1}{sin(K)}=\frac{3.8}{sin(63)}  \\\\sin(K)=\frac{4.1*sin(63)}{3.8}\\\\sin(K)=0.9613\\\\K=sin^{-1} (0.9613)\\\\K=74.0^o  \\

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