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Butoxors [25]
3 years ago
15

The pillars in front of Mr. Jefferson's home are shaped like cylinders. The pillars have a height of 24 ft and a radius of 8 in.

How many square feet of paint are needed to completely cover each pillar? (Do not include the bases.) A. about 100.5 ft2 B. about 1206 ft2 C. about 1608 ft2 D. about 3 ft2
Mathematics
1 answer:
GREYUIT [131]3 years ago
7 0

Answer:

  • <u>Option A. about 100.5ft²</u>

<u />

Explanation:

Since the <em>bases</em> must not be painted, their areas are <em>not included</em> in the calculation.

The <em>surface</em> to paint, of each pillar, is equal to the lateral area of a<em> cylinder </em>with he dimensions given.

The formula for the laeral area of a cylinder is:

        Lateral\text{ }area=2\pi \times radius \times height

Substitute including the conversion factor to convert inches to feet:

        Lateral\text{ }area=2\pi \times 8in\times 1ft/12in \times 24ft=100.5ft^2

You might be interested in
Are the triangles congruent why or why not
maxonik [38]

Answer:

The triangles are congruent by either Angle Side Angle (ASA) or Angle Angle Side (AAS).

Further Explanation:

The congruent triangles are those in which all the corresponding angles and the sides are equal.

There are many congruency rules and are as follows.

1. Angle Angle Side (AAS)

2. Angle Side Angle (ASA)

3. Side Side Side (SSS)

4. Side Angle Side (SAS)

Explanation:

The sum of all the angle of a triangle is {180^ \circ }180

∘

.

In triangle ABC the sum of all angle is {180^ \circ }180

∘

.

\begin{lgathered}\begin{aligned}\angle A+\angle B+\angle C&={180^\circ}\\{42^\circ}+{53^\circ }+\angle C&={180^\circ }\\\angle C&={180^\circ }-{95^\circ }\\\angle C&={85^\circ }\\\end{aligned}\end{lgathered}

∠A+∠B+∠C

42

∘

+53

∘

+∠C

∠C

∠C

=180

∘

=180

∘

=180

∘

−95

∘

=85

∘

In triangle RMQ the sum of all angle is {180^ \circ }180

∘

.

\begin{lgathered}\begin{aligned}\angle R+\angle M+\angle Q&=180^{\circ}\\42^{\circ}+\angle M+85^{\circ}&=180^{\circ}\\\angle M&=180^{\circ}-127^{\circ}\\\angle M&=53^{\circ}\end{aligned}\end{lgathered}

∠R+∠M+∠Q

42

∘

+∠M+85

∘

∠M

∠M

=180

∘

=180

∘

=180

∘

−127

∘

=53

∘

Consider the triangle ABC and triangle RMQ.

\angle A=\angle R={42^\circ }∠A=∠R=42

∘

Side AB = RM

\angle B=\angle M∠B=∠M

Therefore, the triangle ABC is congruent to triangle RMQ.

The triangles are congruent by either Angle Side Angle (ASA) or Angle Angle Side (AAS).

Learn more:

1. Learn more about inverse of the function brainly.com/question/1632445.

2. Learn more about equation of circle brainly.com/question/1506955.

3. Learn more about range and domain of the function brainly.com/question/3412497

Answer details:

Grade: High School

Subject: Mathematics

Chapter: Triangle

Keywords: congruent, angles, triangle, ASA, angle side angle, congruent sides, acute angle, side, corresponding angles, congruent triangle.

3 0
3 years ago
Read 2 more answers
Use multiplication to find 2 equivalent fraction for 3/4 and 4/5
Contact [7]
Equivalent fractions for 3/4 are 6/8 and 9/12

Equivalent fractions for 4/5 is 8/10 and 12/15
7 0
3 years ago
When you found 1 + 8, what was your first step?​
S_A_V [24]
Addition is the answer
4 0
3 years ago
In the diagram, `bar(AC)` is a diameter of the circle with center O. If m`/_ACB` = 50°, what is m`/_BAC`?
Whitepunk [10]

<u>Answer</u>

2. 40


<u>Explanation</u>

The angle subtended by the diameter to the circumference is equal to 90°.

∴ angle ABC = 90°

  Angles in a triangle = 180°

  50 + 90 + x = 180

90 + x = 180

x = 180 - 90

 = 90°


4 0
3 years ago
Read 2 more answers
Help please!! The measures of the angles of a triangle are shown in the figure below. solve for x
tatiyna

9514 1404 393

Answer:

  x = 33

Step-by-step explanation:

The angles are complementary.

  x° = 90° -57°

  x = 33

3 0
3 years ago
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