3 years ago

Step Statement Reason

Mathematics

1 answer:

Julli [10]3 years ago

6 0

Hello,
Please, see the attaced file.
Thanks.

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the diagram shows a circle drawn inside a square 12cm the circle touches the edges o the square. calculate the shades area. take

lyudmila [28]

Answer:

30.89cm³

Step-by-step explanation:

Given that:

Side length, s of square = 12cm

Area of square = s² = 12² = 144cm²

Since the circle touches the edge of tbe square, then the diameter of the circle = side length of square = 12 cm

Area of a circle = πr²

Radius, r = diameter / 2 = 12/2 = 6cm

A = 3.142 * 6^2

A = 3.142 * 36

A = 113.112 cm²

Area of shaded portion = area of square - area of circle

= 144cm² - 113.112cm³

= 30.89cm³

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3 years ago

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3 years ago

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Mama L [17]

40960000

To find the answer, you multiply 80 by itself 4 times as follows:

80 x 80 x 80 x 80 =

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2 years ago

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kap26 [50]

Answer:

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Step-by-step explanation:

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2 years ago

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Please help!!! I'll give 25 points plus brainliest.

Vladimir79 [104]

Answer:

(b) 26.6 days

Step-by-step explanation:

Half life, T = 4 days

initial amount, No = 100 mg

(a) The exponential function is given by

$N = No e^{-\lambda t}\\\\N = No e^{\frac{-0.693t}{T}}\\\\N = No e^{\frac{-0.693t}{4}}\\\\N = No e^{\frac{-0.17325t}{T}}\\\\$

where, N is the amount left.

(b) N = 1 mg

$N = No e^{\frac{-0.17325t}{4}}\\\\1 = 100 e^{\frac{-0.17325t}{4}}\\\\4.605 = 0.17325 t \\\\t=26.6 days$

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3 years ago