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1 year ago

If pi is 3.142 what is the area of a circle of radius 3.5 cm

Mathematics

2 answers:

MArishka [77]1 year ago

8 0

Answer:

The Area of circle is 34.49cm

Step-by-step explanation:

⟼ Area of a circle = $\sf \pi {r}^{2}$

where,

π = 3.142
r = radius = 3.5cm

⟼ Area = (3.142)(3.5)(3.5)

⟼ Area = (3.142)(12.25)

⟼ Area = 38.4895cm

velikii [3]1 year ago

7 0

Answer:

38.4895cm²

Step-by-step explanation:

The area=3.142×(3.5cm)²=38.4895cm²

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BigorU [14]

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4 years ago

You may use a calculator to complete this test. if 1 egg and 1/3 cup of oil are needed for each bag of brownie mix, how many bag

iren [92.7K]

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3 years ago

Use the formula to evaluate the series 1+2+4+8+...a10

valina [46]

Answer:

The sum of the given series is 1023

Step-by-step explanation:

Geometric series states that a series in which a constant ratio is obtained by multiplying the previous term.

Sum of the geometric series is given by:

$S_n = \frac{a(1-r^n)}{1-r}$

where a is the first term and n is the number of term.

Given the series: $1+2+4+8+.................+a_{10}$

This is a geometric series with common ratio(r) = 2

We have to find the sum of the series for 10th term.

⇒ n = 10 and a = 1

then;

$S_n = \frac{1(1-2^{10})}{1-2} =\frac{1-1024}{-1} =\frac{-1023}{-1}=1023$

Therefore, the sum of the given series is 1023

8 0

3 years ago

Write three equivalent ratios for the given ratio. 6 9

aliya0001 [1]

Answer:

Do you mean 6/9?

2/3

12/18

8/12

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3 years ago

Um gato come 5 ratos por dia. Quantos ratos 5 gatos comem em 5dias?

hram777 [196]

Answer:

1 gato come 5 ratos em 1 dia X 5 = 5 gatos come 25 ratos por dia

5 gatos come 25 ratos por dia X 5 = 25 gatos come 125 ratos por dia

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3 years ago