A rectangular room is 5000 mm long and 4000 mm wide. Find the cost of carpeting the room, if it cost ₹86.75 per square metre. *
1735
17,35,000
20,000 000
None of these
Answers
Answer:
17,35,000
Step-by-step explanation:
conversion of mm to m
1 mm= ? m
1 mm = 0.001 m
Find the area of the rectangle:
Area = l x b
= 5000 x 4000
= 20,000,000 mm
then convert 20,000,000 mm into m
Therefore, 1 mm = 0.001 m
20,000,000 mm = ? m
Now we can do cross multiply,that is :
20,000,000 x 0.001
then we divide 20,000,000 and 0.001 by 100.
So,we will get = 20,000 m.
- we have finished the conversion part.
Now we have to find the cost of carpeting the room, if it cost ₹86.75 per square metre.
So, 1 square metre = ₹86.75
20,000 = ?/-
So, we can again do cross multiply,that is:
20,000 x 86.75[conversion is needed in this case or easier calculations]
= 20,000/100 & move the point of 86.75 .
= 200 x 8675 = 17,35,000
Therefore , the cost of carpeting the room is 17,35,000