Question

find the cost of polishing a circular piece of wood of diameter 1.4 m , if the rate of polishing is Rs 50 per square meter

Answer 1

cost of polishing a circular piece of wood is Rs. 77

Step-by-step explanation:

diameter of the circular wood = 1.4 m

radius of the circular wood = 0.7 m

area of the circular wood :

$=\pi r ^2 \\\\=\frac{22}{7}\times 0.7 \times 0.7 \\\\=22\times 0.07 \\\\=1.54 m ^2$

cost of polishing 1 m² = Rs. 50

cost of polishing 1.54 m² = 50 ×1.54 = RS. 77

hence , cost of polishing a circular piece of wood is Rs. 77

#Learn more :

Find the cost of polishing a circular table of radius3.5,if the rate of polishing is 25per m²

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