Question

a hemispherical dome of temple is to be painted from outside the radius of the Dome is 3.5 M find the cost of painting @ rupees 25 per metre square​

Answer 1

Answer:

Radius of the circle (dome) = 3.5m

Radius of the circle (dome) = 3.5mCurved surface area of dome =

Radius of the circle (dome) = 3.5mCurved surface area of dome =2\pi {r}^{2}2πr2

Radius of the circle (dome) = 3.5mCurved surface area of dome =2\pi {r}^{2}2πr2That is :

Radius of the circle (dome) = 3.5mCurved surface area of dome =2\pi {r}^{2}2πr2That is :=2*22/7*3.5*3.5

Radius of the circle (dome) = 3.5mCurved surface area of dome =2\pi {r}^{2}2πr2That is :=2*22/7*3.5*3.5=2*22*3.5*0.5

Radius of the circle (dome) = 3.5mCurved surface area of dome =2\pi {r}^{2}2πr2That is :=2*22/7*3.5*3.5=2*22*3.5*0.5=22*3.5

Radius of the circle (dome) = 3.5mCurved surface area of dome =2\pi {r}^{2}2πr2That is :=2*22/7*3.5*3.5=2*22*3.5*0.5=22*3.5=77m²

Radius of the circle (dome) = 3.5mCurved surface area of dome =2\pi {r}^{2}2πr2That is :=2*22/7*3.5*3.5=2*22*3.5*0.5=22*3.5=77m²Cost of painting = 25*77

Radius of the circle (dome) = 3.5mCurved surface area of dome =2\pi {r}^{2}2πr2That is :=2*22/7*3.5*3.5=2*22*3.5*0.5=22*3.5=77m²Cost of painting = 25*77= rs. 1925

Radius of the circle (dome) = 3.5mCurved surface area of dome =2\pi {r}^{2}2πr2That is :=2*22/7*3.5*3.5=2*22*3.5*0.5=22*3.5=77m²Cost of painting = 25*77= rs. 1925Hope this will be helping you

Answer 2

Answer:

the cost of painting of the dome is Rs.1925

Step-by-step explanation:

Radius = 3.5 m

CSA =  2πr^2

= 2 x 22/7 x 3.5^2

= 2 x 22/7 x 12.25

= 539/7

= 77 m

CSA = 77 sqm

1 metre = Rs.25

77 m = 77 x 25

= Rs.1925

hope it helps

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