Mathematics, 18.07.2019 22:30 firdausmohammed80

Which of the following is the surface area of the right cylinder below?

Answers: 2

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Answers

Answer from: taylorwhitfield6

c. 198π units²

Step-by-step explanation:

We have to find the surface area of a cylinder.

We know that surface area of a cylinder= 2πrh+2πr²

where r is the radius

and h is the height of the cylinder.

here h=2 units and r=9 units

Surface area= 2π×9×2+2π×9×9

= 198π units²

Hence, correct option is:

c. 198π units²

Answer from: lololololol12555

The surface area of the right cylinder is $\boxed{198\pi {\text{ uni}}{{\text{t}}^2}}$ .

Further explanation:

The formula for the surface area of the cylinder can be expressed as,

${\text{Surface area}} = 2\pi r\left( {r + h}\right)$

Here, ‘r” represents the radius of the cylinder and “h” represents the height of the cylinder.

Given:

The radius of the cylinder is and the height of the cylinder is .

The options of surface area are given as follows.

A. $187{\text{ uni}}{{\text{t}}^2}$

B. $174{\text{ uni}}{{\text{t}}^2}$

C. $198{\text{ uni}}{{\text{t}}^2}$

D. $162{\text{ uni}}{{\text{t}}^2}$

Explanation:

The surface area of the right cylinder can be obtained as follows,

$\begin{aligned}{\text{Surface area}}&= 2\pi r\left( {r + h}\right)\\&= 2\pi\times \left( 9 \right)\times \left( {9 + 2}\right)\\&= 18\pi \times11\\&= 198\pi\\\end{aligned}$

The surface area of the cylinder is $198\pi {\text{ unit}}{{\text{s}}^2}$ .

Option A is not correct as the surface area of the cylindrical is not $187{\text{ uni}}{{\text{t}}^2}$ .

Option B is not correctas the surface area of the cylindrical is not $174{\text{ uni}}{{\text{t}}^2}$ .

Option C is correct as the surface area of the cylindrical is $198{\text{ uni}}{{\text{t}}^2}$ .

Option D is not correct as the surface area of the cylindrical is not $162{\text{ uni}}{{\text{t}}^2}$ .

Hence, the surface area of the right cylinder is $\boxed{198\pi {\text{ uni}}{{\text{t}}^2}}$ .

Learn more:

1. Learn more about inverse of the functionhttps://.

2. Learn more about equation of circle .

3. Learn more about range and domain of the function

Answer details:

Grade: High School

Subject: Mathematics

Chapter: Mensuration

Keywords: Cylinder, surface area of the cylinder, curved surface area, volume, right cylinder, 187\pi, height, and radius.

Answer from: Quest

intensity of the vector is v= √37 ≈ 6.08 units and make angle ∡α ≈ 9.46° with east direction

step-by-step explanation:

required vector is consists of the two componentsvx= 2+4=6 units and vy= 1 unit and vx ⊥ vywe will use pythagorian theorem to find intensity of the vector vv∧2 = vx∧2 + vy∧2 => v = √vx∧2 + vy∧2 = √6∧2 + 1∧2 = √36+1 = √37 ≈ 6.08 unitsthe angle ∡α between vector and east direction we wil find with tanαtanα = 1/6 => α = arc tanα = arc 1/6 => α ≈ 9.46°

hope this

#10 can anyone solve this for will give !

Answer from: Quest

c. side angle side. u shares the same sides

By which rule are these triangles congruent? a) aas b) asa c) sas d) sss

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