Instructions
The pie-chart given below show usage of materials in a construction of a house. Study the chart and answers the questions :
Solution
Usage of steel = $$36^\circ$$
=> Percentage of steel used in the construction of a house = $$\frac{36^\circ}{360^\circ} \times 100$$
= $$\frac{100}{10}=10\%$$
=> Ans - (A)
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