Question

Find the cost of polishing a circular table-top of diameter 1.6 m, if the rate of polishing is ₹15/m2. (Take π = 3.14)No need to spam ​

Answer 1

Step-by-step explanation:

D=1.6m

R=1.6÷2=0.8

L.S.A of circle =

$\pi {r}^{2}$

3.14×0.8×0.8=20.096

cost of polishing a circular table top =

20.096×15=301.44/-

Answer 2

Given,

Daimeter=1.6 m

Daimeter=1.6 mRadius=0.8 m

To find,

Cost

Solution,

Area of circle,

$\pi \: {r}^{2}$

3.14×0.64=2.0096m²

Now,

Rate of the polishing per meter square=₹15

Rate of the polishing per meter square=₹15Cost of polishing table top=15×2.0096

Cost=30.14m²

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