Question
Download Solution PDFA hemispherical bowl made of brass has an inner diameter of 14 cm. Find the cost of painting it from the inside at the rate of Rs. 15 per cm2. (Use π =
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven:
The inner diameter of the bowl = 14 cm
Rate of painting = Rs. 15 per cm²
Formula used:
The surface area of the hemisphere = 2πr2
Cost of painting = Surface area × Rate of painting
Calculation:
Radius (r) = Diameter/2 = 14 cm/2 = 7 cm
Surface area = 2 × (22/7) × 72 = 308 cm²
Cost of painting = 308 × 15 = Rs. 4620
∴ The cost of painting the bowl from the inside is Rs. 4620.
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