Ask Question
27 December, 04:37

6. A hemispherical dome of a building needs to be

painted. if the circumference of the base of the dome

is 17.6 m, find the cost of painting it, given the cost of

painting is Rs. 5 per 100 cm2

+5
Answers (1)
  1. 27 December, 04:51
    0
    Step-by-step explanation:

    circumference=17.6 m

    2πr=17.6

    2*22/7*r=17.6

    44/7 r=17.6

    r=17.6*7/44=0.4*7=2.8 m=280 cm

    surface area=1/2 (4 πr²) = 2πr²=2*22/7 * (280) ²=2*22/7*280*280

    =44*40*280

    =492800 cm²

    cost of painting=492800*5:100=24640 Rs.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “6. A hemispherical dome of a building needs to be painted. if the circumference of the base of the dome is 17.6 m, find the cost of ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers