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Citrus2011 [14]
3 years ago
6

What is the surface area of a sphere with a diameter of 16 cm?

Mathematics
1 answer:
Vilka [71]3 years ago
6 0

Answer:

804.25 cm² (corrected to 2 decimal places)

Step-by-step explanation:

Radius = diameter / 2

= 16/ 2

=8 cm

Surface area of sphere = 4πr²

= 4π8²

=804.25 cm² (corrected to 2 decimal places)

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Nostrana [21]

Answer:

w=-11/6

Step-by-step explanation:

5 0
2 years ago
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The circumference of a circle is 15 pie centimeters. What is the area of the circle in terms of pie
Jobisdone [24]

Answer:

C

Step-by-step explanation:

The circumference (C) of a circle = 2πr ← r is the radius

Given C = 15π the equating gives

2πr = 15π ( divide both sides by 2π )

r = \frac{15}{2} = 7.5 cm

The area (A) of a circle is calculated using the formula

A = πr² = π × 7.5² = 56.25π cm² → C

5 0
3 years ago
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Plz help me with these 2 problems I really need it and I need to know how you to the answer so I can show my work
ELEN [110]

Answer:

13.) 0.19625    15.) 37.68

Step-by-step explanation:

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Hope this helped :  )

7 0
3 years ago
What is the x in 4x-5=8​
ale4655 [162]

Answer:

x= 3.25

Step-by-step explanation:

4x-5=8

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4x=13

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8 0
3 years ago
The sum of two numbers is 110.The larger number is 2 less than 7 times the smaller.Find the Large number
natima [27]

Answer:

The larger number is 96.

Step-by-step explanation:

let \: the \: two \: numbers \: be \: a \: and \: b \\ a + b = 110 \\ let \: a \: be \: the \: larger \: number \\ a = 7b - 2 \\ we \: can \: get \: the \: value \: of \: b \: by \: substituting \: the \: value \: above \: for \: a \: in \: eq \: 1 \\ 7b - 2 + b = 110 \\ 8b - 2 = 110 \\ 8b = 110 + 2 \\ 8b = 112 \\ b = \frac{112}{8}  \\b = 14\\ calculate \:the \: value \: of \: a \: using \: the \: equation \: above \\ a + b = 110 \\ a = 110 - 14 \\ a = 96 \\ hence \: the \: large \: number \: is \: 96

8 0
2 years ago
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