bsmith892341
15.02.2022 •
Mathematics
a classroom is 6.8m long 3.5m wide and 270cm high find the cost of plastering the 4 walls and ceiling at the rate of 12per m^2
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Ответ:
=2*2.7(6.8+3.5) +6.8*3.5
=2*2.7*10.3+ 23.8
= 55.62+23.8
=79.42
Cost of plastering =79.42*12
= 953.04
Ответ:
The difference in circumference is about 25.12 centimeters
Step-by-step explanation:
You find diameter by multiplying the radius by 2. So with that being said, the diameter of circle A is 18cm and the diameter of circle B is 10cm.
You calculate circumference by multiplying ur diameter by pi (3.14)
18 cm x 3.14 = 56.52 cm so the circumference of Circle A is 56.52 cm.
10cm x 3.14 = 31.9 cm so the circumference of circle B us 31.9 cm.
56.56
-31.9
= 24.62
24.62 is the around 25.12 cm