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4 years ago

5

I need help on this question

2 answers:

BaLLatris [955]4 years ago

5 0

Well this decagon has 10 equal sides so all we have to do is divide 360 by 10 to find the measure of the interior angles. 360/10 = 36 So the interior angles are 36º

I hope this helps

-Ayden

MatroZZZ [7]4 years ago

3 0

The interior angles are 36 degrees.

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In the adjoining figure, PQ is the diameter of a circle

Olenka [21]

Answer:

The diameter of a circle is a line which joins two points on the circle and also passes through the centre of the circle. (In the adjoining figure AB is a diameter of the circle; C is its centre.) Express the diameter of the circle (d) in terms of its radius (r).

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3 years ago

Let U = {q, r, s, t, u, V, W, x, y, z}

Alexus [3.1K]

Answer:

B'=U-B={q, r, s, t, u, V, W, x, y, z}-{q, s, y, z}={r,t, u, V, W, x, y}

A'=U-A={q, r, s, t, u, V, W, x, y, z}-{q, s, u, w, y}={r,t,v,w,x,z}

B'UC={r,t, u, V,W, x, y}U{v, w, x, y, z).={{r,t, u, V,W, x, y,z}

Step-by-step explanation:

(B'U C) U A'={{r,t, u, V,W, x,y,z}U{r,t,v,w,x,z}={{r,t, u, V,W, x,y,z}

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3 years ago

The radius of a cylindrical gift box is (3x+4) inches. The height of the gift box is three times the radius. What is the surface

liq [111]

The required equation of the surface area of the cylinder is $(60\pi x^2+192\pi x+128\pi)$

<u>Solution:</u>

Let "r" be the radius of cylinder and "h" be the height.

Formula for surface area is:

$S= 2r^2\pi + 2r\pi h$

where $2r^2\pi$ is surface of two bases of cylinder and $2r\pi h$ is surface of mantle.

From the given, the height of the gift box is three times the radius, i.e $h=3r=3\times(3x+4)\rightarrow h=9x+12$

On substituting the given values in the formula we get,

$S = 2\times\pi[(3x+4)^2 + (9x+12)\times(3x+4)]$

$\Rightarrow S=2\pi[(3x^2)+2\times3x\times4+4^2]+[(9x\times3x)+12\times3x+36x+48]$

$\Rightarrow S=2\pi[9x^2+24x+16]+[21x^2+36x+36x+48]$

$\Rightarrow S=2\pi[9x^2+24x+16+21x^2+72x+48]\rightarrow2\pi[30x^2+96x+64]$

On multiplying $2\pi$ inside the brackets we get,

$\Rightarrow S=[60\pi x^2+192\pi x+128\pi]$

Hence, the required equation is $(60\pi x^2+192\pi x+128\pi)$

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3 years ago

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lorasvet [3.4K]

Answer:

5,-3

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

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Helen [10]

Answer:

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or

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3 years ago