Answer :

Since the photograph has dimensions as th of its actual size, hence


Actual length = 25 × 10 = 250 cm


Actual breadth = 10 × 10 = 100 cm


Actual area of the table = 250 × 100 = 25,000 cm2


Diameter of 1 hole = 0.5 × 10 = 5 cm


Radius of 1 hole = 2.5 cm


Area of 6 holes = 6 × ∏r2 = 6 × × 2.5 × 2.5 = 118 cm2


Area to be polished = Area of table – Area of 6 holes = 25,000 – 118 = 24,882 cm2 = 2.4882 m2


Cost of polishing at the rate of Rs 200/ m2 = 2.4882 × 200 = Rs 497


Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
RELATED QUESTIONS :

<span lang="EN-USNCERT Mathematics

Fill in the blankNCERT - Exemplar Mathematics

A design is made NCERT - Exemplar Mathematics

People of KhejadlNCERT - Exemplar Mathematics

<span lang="EN-USNCERT Mathematics

<span lang="EN-USNCERT Mathematics

Find the area encNCERT - Exemplar Mathematics

Find the area encNCERT - Exemplar Mathematics

Find the area encNCERT - Exemplar Mathematics

Find the area encNCERT - Exemplar Mathematics