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V125BC [204]
3 years ago
5

A room 9m * 7.5m is covered with tiles. Size of each tile is 25cm by 20cm. Find the cost of tiles at the rate of Rs. 45 per tile

.
Mathematics
1 answer:
Korolek [52]3 years ago
7 0

Answer:

Step-by-step explanation:

9mx7.5m=67.5m

25cmx20cm=500cm=0.5m

67.5÷0.5=135

45×135=Rs.6075

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Answer:

The answer is 358.01

Step-by-step explanation:

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Now, to solve first we crack the power notation then multiply and then do the addition:

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7 0
3 years ago
Find the sum of the geometric series 40 + 40(1.005) + 40(1.005)^2 + ⋯ + 40(1.005)^11.
KiRa [710]

Answer:

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Step-by-step explanation:

In order to find the value of the sum, you have to apply the geometric series formula, which is:

\sum_{i=1}^{n} ar^{i-1} = \frac{a(1-r^{n})}{1-r}

where i is the starting point, n is the number of terms, a is the first term and r is the common ratio.

The finite geometric series converges to the expression in the right side of the equation. Therefore, you don't need to calculate all the terms. You can use the expression directly.

In this case:

a=40

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Replacing in the formula:

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The sum is 493.4

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2 years ago
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8_murik_8 [283]

Answer:

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