Question

Question number 7 solve.

Answer 1

Hello,

Diagonals of rhombus are45 cm and 30 cm

In order to find the polishing cost we need to find the area of the total tiles and then multiply it with the cost given.
Now, we know that :-

Area of rhombus = 1/2 * diagonal 1 * diagonal 2

Now, area of 1 rhombus shaped tile = 1/2*45*30
Which is = 45*15 = 675cm²

Now total tiles=3000
Total area covered = 675*3000 =2025000cm²
Now
Cost given =rs. 4 per m²

Now, our area is in cm² but cost is in m².
So, we need to convert the area into m²

So, 2025000cm²= 202.5m²
Now
Cost of polishing = 202.5 * 4 = rs. 810

Hope this will be helping you.

WARM REGARDS
Sahil khirwal.

Answer 2

This is the answer.
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Sorry change the 20.25 to 202.5 sq.m.
Cost = (202.5)*4=₹810