Answers
Answer:
cost of polishing is =27,720 Rupees
Step-by-step explanation:
According to the information provided in the question it is given as
Circular table of diameter =42 cm
Rate of polishing =₹ 20 per metre square.
We need to find the cost of polishing
First the diameter is =42 cm
Hence the radius = D/2
Putting the value
=42 /2
=21m^{2}m
2
Now we find the area of circular table top
Area =\pi r^{2}πr
2
A=\frac{22}{7}\times 21^{2}A=
7
22
×21
2
\begin{gathered}A=\frac{22}{7} \times 21\times21\\A=22\times 3\times 21\end{gathered}
A=
7
22
×21×21
A=22×3×21
A=1386m^{2}A=1386m
2
Now
Cost of polishing = Area of circular top x rate per square meter
Putting the value we get the answer
\begin{gathered}Cost of polishing =1386 \times 20\\ C=27,720 rupees\end{gathered}
Costofpolishing=1386×20
C=27,720rupees
So cost of polishing is =27,720 Rupees
Step-by-step explanation:
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