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4 years ago

A quarter circle is attached to the side of a square as shown.

Mathematics

2 answers:

Radda [10]4 years ago

6 0

The area of the square is s×s
= 4×4 = 16 m²
The area of a quarter circle is (πr²)/4
= 3.14 × 16/4
= 3.14 ×4
= 12.56 m²
Therefore, the total area is;
= 16 +12.56
= 28.56 m²
≈ 28.6 m²

prohojiy [21]4 years ago

3 0

-TalibShaheed
The area of the square is YxY
= 4×4 = 16 m²
The area of a quarter circle is (πr²)/4
    = 3.14 × 16/4
    = 3.14 ×4
    = 12.56 m²
That means, the total area is:
     = 28.56 m²
Or it will be about:
     ≈ 28.6 m²
Hope it helped!
-Gabrielle

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fomenos

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Newton's Law of Cooling:

$E(t) - 20 = (E_0 - 20) e^{- k t}$

We're given $E(1)=70 \textrm{ and } E(5)=45$

$70-20 = (E_0 - 20) e^{-k}$

$45-20 =(E_0 - 20) e^{-5k}$

Dividing,

$\dfrac{50}{25}=e^{4k}$

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Now,

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$E_0 = 20 + (E(t) - 20)e^{k t}$

$E_0 = 20 + (E(1) - 20)e^{k}$

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