Math, asked by vijaylaxmi86, 1 year ago

a cubical box with lid has a length of 30 cm find the cost of painting the inside and outside of the box at rs.5.50 per m sq.

Answers

Answered by Anonymous
27
Solution :-

We have to find the surface area of the cubical box.

Surface area of the cube = 6a²  where a = 30 cm

⇒ 6*30*30

⇒ 5400 sq cm

As the cubical box has to be painted both from the outside and inside.

So, the total surface area = Inner surface area + outer surface area

⇒ 5400 + 5400 

= 10800 sq cm

As we know that 1 sq m = 10000 sq cm

Surface area in sq m = 10800/10000

Surface area in sq m = 1.08 sq m

Cost of painting the cubical box = Rs. 5.50 per sq m

Total cost of painting = 5.5*1.08

Total cost = Rs. 5.94

So, the total cost of painting the cubical box from outside and inside is Rs. 5.94

Answer.

Read more on Brainly.in - https://brainly.in/question/1374722#readmore
Answered by bdalai82
6

Answer:

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