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

Derivative and differentiation, Derivative and Differentiation The pro...

Derivative and Differentiation The process of acquiring the derivative of a function or slope or gradient is referred to as differentiation or derivation. The derivative is de

Differential equations, Verify Liouville''s formula for y "-y" - y'' + y = ...

Verify Liouville''s formula for y "-y" - y'' + y = 0 in (0, 1) ?

Equivelent ratios, if 2 ballons cost 12 coins,use equivelent ratios to see ...

if 2 ballons cost 12 coins,use equivelent ratios to see how many coins 8 ballons would cost

Ampltude and period, find the amplitude and period of y=3 sin 2 pi x

find the amplitude and period of y=3 sin 2 pi x

Formulas, how many formulas there for the (a-b)2

how many formulas there for the (a-b)2

ALJEBRA, HOW TO FIND 2SQUARE *7 CUBE

HOW TO FIND 2SQUARE *7 CUBE

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