Calculate the total surface area which is exposed , Mathematics

Assignment Help:

A golf ball has a diameter equal to 4.1cm. Its surface has 150 dimples each of radius 2mm. Calculate the total surface area which is exposed to the surroundings assuming that the dimples are hemispherical.

(Ans: 71.68)

Ans:    SA of ball = 4π × ( 4.1/2 )2   = 16.8 π cm2

TSA exposed to surroundings

= SA of ball - 150  × π r2 + 150  × 2π r2

= 16.8 π + 150 π r2

= 71. 68 cm2

 


Related Discussions:- Calculate the total surface area which is exposed

The null hypothesis, The null hypothesis It is the hypothesis being tes...

The null hypothesis It is the hypothesis being tested, the belief of a specific characteristic for illustration, US Bureau of Standards may walk to a sugar making company along

Statistics, A researcher is investigating the effectiveness of a new medica...

A researcher is investigating the effectiveness of a new medication for lowering blood pressure for individuals with systolic pressure greater than 140. For this population, systol

Right-handed limit, Right-handed limit We say provided we can m...

Right-handed limit We say provided we can make f(x) as close to L as we desire for all x sufficiently close to a and x>a without in fact letting x be a.

Reflection matrix, how do i solve reflection matrix just looking at the num...

how do i solve reflection matrix just looking at the numbers in a matrix

Fiancial project, With your current loan, explain how much additional money...

With your current loan, explain how much additional money you would need to add to your monthly payment to pay off your loan in 20 years instead of 25. Decide whether or not it wou

Analalitic geometry, 1. Write down the canonical equations of the line pass...

1. Write down the canonical equations of the line passing through the point A(2,3, 4) and being parallel to the vector q ={5,0,-1}.

Objectives of learning to count, Objectives :  After studying this unit, y...

Objectives :  After studying this unit, you should be able to : 1.   explain the processes involved in counting; 2.   explain why the ability to recite number names is no in

Variation and proportion, i am not getting what miss has taught us please w...

i am not getting what miss has taught us please will you will help me in my studies

Geometry, triangular with base AB = 48cm and height CH=16cm is inscribed a ...

triangular with base AB = 48cm and height CH=16cm is inscribed a rectangle MNPQ in which MN: MQ = 9:5 Find MN and MQ

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd