To maintain beauty of a monument, the students of the school cleaned and painted the dome of the monument. The monument is in the form of a hemisphere. From inside, it was white washed by the students whose area is 249.48 m2. (a) Find the volume of the air inside the dome. If white washing costs ₹2 per m2, how much does it costs ? (b) Which value is depicted by the students? (π = 22/7)
