help me dear ❤️❤️
don't post nonsense answer plz
Answers
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.
Answer:
what abt u u aslo call me right i never complained u abt it and if i call it's problem for u