Math, asked by Anonymous, 1 year ago

help me dear ❤️❤️

don't post nonsense answer plz​

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Answers

Answered by yash356689
4

Answer:

Total area to be painted

=2\pi RH+2\times \pi \left( { R }^{ 2 }-{ r }^{ 2 } \right) +2\times 2\pi rh+2\pi { r }^{ 2 }=2πRH+2×π(R

2

−r

2

)+2×2πrh+2πr

2

=\left( 2\times \cfrac { 22 }{ 7 } \times 10\times 40 \right) +2\times \cfrac { 22 }{ 7 } \left( { 10 }^{ 2 }-{ 5 }^{ 2 } \right) +4\times \cfrac { 22 }{ 7 } \times 5\times 10+2\times \cfrac { 22 }{ 7 } \times 5\times 5=(2×

7

22

×10×40)+2×

7

22

(10

2

−5

2

)+4×

7

22

×5×10+2×

7

22

×5×5

=2\times \cfrac { 22 }{ 7 } \left[ 400+75+100+25 \right] =2\times \cfrac { 22 }{ 7 } \times 600=\cfrac { 26400 }{ 7 } cm^{2}=2×

7

22

[400+75+100+25]=2×

7

22

×600=

7

26400

cm

2

Cost of painting\cfrac { 26400 }{ 7 } \times \cfrac { 14 }{ 100 } = \text Rs528.

7

26400

×

100

14

=Rs528.

Answered by jalpadoshi612
0

Answer:

what abt u u aslo call me right i never complained u abt it and if i call it's problem for u

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