Question

A table top is 9dm 5cm long 6dm 5cm broad.what will be the cost to Polish it at the rate of 20 paise per square centimetres​

Answer 1

Answer:

Cost to Polish the table is 1235.

Step-by-step explanation:

Given:

Length of the table = 9 dm 5 cm.

Since length is in dm we will convert in cm.

Now we know that;

1 dm = 10 cm

so 9 dm = 90 cm

So the length will become

;

Length of the table = 90 cm + 5 cm = 95

Also Given:

Breadth of the table = 6dm 5cm

1 dm = 10 cm

so 6 dm = 60 cm

Breadth of the table = 60 cm 5 cm = 65 cm

Now we know that;

Since table are in rectangular form

; So Area of table will be equal to length times breadth

. framing in equation form we get;

Area of table 95 x 65 = 6175 cm

Now Given: Cost to Polish per square centimeter = 20 paise

So to Polish 6175 square centimeter = Cost to Polish 6175 square centimeter

By Using Unitary method we get

Cost to Polish 6175 square centimeter = 20 x 6175 = 123500 paise

Now 100 paise =₹1

So 123500 paise = 123500 = 1235 rupees

Hence Cost to Polish the table is 71235.

Step-by-step explanation:

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Answer 2

Answer:

hope it's helpful

Total surface area of cylinder 2πr(h+r)

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