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kondaur [170]
3 years ago
13

The circumference of a spherical head of lettuce is 12π in. Find the surface area of the head of lettuce. Express your answer in

terms of π.
Mathematics
1 answer:
ankoles [38]3 years ago
7 0
We  know that

[surface area of a sphere]=4πr²

length of a circumference=2<span>πr
r=</span>length of a circumference/(2π)------> 12π/2π-------> 6 in

so
[surface area of a sphere]=4π6²----------> 144π in²

the answer is 144π in²

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6k+10.5=3k+12
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Suppose a white dwarf star has a diameter of approximately 1.8083 to the power of 4 km. Use the formula 4n to the power of 2 to
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ANSWER:

The surface area of the star is 3.2700 x 10^{8} square kilometres.

EXPLANATIONS:

Diameter of the star = 1.8083 x 10^{4} Km.

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Where n is the radius of the star.

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Thus,

Surface area = 4 x (0.90415*10^{4} )^{2}

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8x-5y=21 simultaneous linear equation<br>2x+9y=-5
olya-2409 [2.1K]

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x=2 and y=-1

Step-by-step explanation:

If two equations are given, we can solve one of the equation in terms of single variable and put it in the other equation which will further give the value of x and y.

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8x-5y=21              Equation:1

2x+9y=-5             Equation:2

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8x+36y=-20        Equation 3

Subtracting Equation:3 from Equation:1

8x-5y-(8x+36y)=21-(-20)\\8x-5y-8x-36y=21+20\\-41y=41\\y=-1

Putting value of 'y' in Equation:2 which will give the value of x

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