A circle has a radius of 5 ft. What is the area
Answers
Answer:
78.5 ft²
Step-by-step explanation:
The area of a circle is given by
Area = πr²
where r is the radius = given as 5 ft
π = 3.14
substituting the values into the equation, we get
Area
= πr²
= (3.14) (5²)
= 78.5 ft²
Answer:
Solution :Here, we have given that the radius of circle is 5 ft.
So, finding the area of circle by substituting the values in the formula :
[tex]\longrightarrow{\pmb{\frak{Area_{(Circle)} = \pi{r}^{2} }}}[/tex]
[tex]\longrightarrow{\frak{Area_{(Circle)} = 3.14 \times {(5)}^{2}}}[/tex]
[tex]\longrightarrow{\frak{Area_{(Circle)} = \dfrac{314}{100} \times {(5 \times 5)}}}[/tex]
[tex]\longrightarrow{\frak{Area_{(Circle)} = \dfrac{314}{100} \times {(25)}}}[/tex]
[tex]\longrightarrow{\frak{Area_{(Circle)} = \dfrac{314}{100} \times 25}}[/tex]
[tex]\longrightarrow{\frak{Area_{(Circle)} = \dfrac{314 \times 25}{100}}}[/tex]
[tex]\longrightarrow{\frak{Area_{(Circle)} = \dfrac{7850}{100}}}[/tex]
[tex]\longrightarrow{\frak{Area_{(Circle)} = 78.50 \: {ft}^{2} }}[/tex]
[tex]\star \: {\underline{\boxed{\sf{\purple{Area_{(Circle)} = 78.50 \: {ft}^{2}}}}}}[/tex]
Hence, the area of circle is 70.50 ft².
[tex]\rule{300}{1.5}[/tex]
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Answers
Answer:
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Step-by-step explanation:
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[tex]A = P (1+\frac{r}{100} )^{n}[/tex]
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A = Final amount
P = Initial principal
r = Rate per annum
n = Time in years
According to the question
Marilyn purchases a doll for = $450
i.e, Initial Principal (P) = $450
Doll's value will increase each year by = 2.5%
i.e, Rate per annum = 2.5%
Value (V) of the doll after purchase = Final amount (A)
(t) = Time in years (n)
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[tex]A = P (1+\frac{r}{100} )^{n}[/tex]
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[tex]V = 450 (1+{0.025}{} )^{t}[/tex]
[tex]V = 450 ({1.025}{} )^{t}[/tex].
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