Question

The top of table is in
in form of
a parallelogram of side 72 cm
altitude 42 cm.find the cost
of polishing table top
of 1.5
per metre
find the cost of polishing at rate of 1.5 rupees per metre​

Answer 1

Answer

Cost of polishing the table top ₹45.36

Explanation:

Given

• The table top is in a shape of parallelogram.
• one side of the table is 72cm.
• altitude of the table is 42 cm

To Find:

• The cost of polishing the table at ₹1.5/m

Solution

( To find the cost of polishing, we need to find the area of the table top. )

The base of the Parallelogram is its side 72cm

Area of a parallelogram = altitude × base

Area of the table top = 72cm × 42cm

Area of the table top = 3024cm

Converting 3024cm into m

1 m = 100cm

1cm = 1/100 m

3024cm = 3024/100 m

3024cm = 30.24 m

Cost of polishing 1m = ₹1.5

Cost of polishing 30.24 m = 1.5 × 30.24

Cost of polishing 30.24 m = ₹45.36

Cost of polishing the table top ₹45.36

Answer 2

Given:-

Tɑble top is in ɑ shɑpe of pɑrɑllelogrɑm.

★ Side of the tɑble is 72cm.

★ Altitude of the tɑble is 42cm

To Find:-

Cost of polishing the tɑble ɑt ₹1.5/m

Solution:-

To find the cost of polishing,

First, we need to find the ɑreɑ of the tɑble top.

The bɑse of the Pɑrɑllelogrɑm is its side 72cm.

We know that:-

$\large{ \boxed{ \rm{Area = Altitude \times base}}}$

Then,

• Areɑ of the tɑble top = 72cm × 42cm
• Areɑ of the tɑble top = 3024 cm

Converting 3024 cm into m:-

:$\implies$$\sf\ 1\:m = 100\:cm$

:$\implies$ $\sf \: 1\: cm = \dfrac{1}{100}m$

:$\implies$ $\sf \: 3024\: cm = \dfrac{3024}{100}m$

: $\implies$ $\sf\: 3024\: cm = 30.24\: m$

$\to$ Cost of polishing 1m = ₹ 1.5

$\to$ Cost of polishing 30.24 m = 1.5 × 30.24

$\to$ ₹ 45.36

Hence,

Cost of polishing the tɑble top is ₹ 45.36.