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3 years ago

Question 4

Mathematics

2 answers:

Fynjy0 [20]3 years ago

5 0

Answer:

The number of sides of a regular polygon is the same as the number of lines of reflection that can map the polygon onto itself. The number of lines of symmetry is the same as the number of lines of reflection for mapping.

Step-by-step explanation:

PLATO

Yakvenalex [24]3 years ago

3 0

Answer:

Step-by-step explanation:

The number of lines of symmetry is the same as the number of lines of reflection for mapping.

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Complete this quiz to finish the assignment for 3A - Geometry Pap due on Mar 23, 2021

Natalija [7]

Answer:

What is the Picture?

Step-by-step explanation:

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3 years ago

Find the total area for the regular pyramid.

hram777 [196]

Answer:

Option B

Step-by-step explanation:

Given is the hexagonal pyramid.

We know the radius of the base is same as its side.

Find the base area:

A = 3√3/2a²
A = 3√3/2*6² = 54√3

Given the height and radius, find the side of the lateral triangular faces:

$\sqrt{8^2+6^2} =\sqrt{100} =10$

Each of 6 triangles have sides 10, 10 and 6 units.

Find the area using heron's formula:

s = P/2 = (10*2 + 6)/2 = 13
s - a = s - b = 13 - 10 = 3
s - c = 13 - 6 = 7
$A = \sqrt{s(s-a)(s-b)(s-c)} =\sqrt{13*3*3*7} =3\sqrt{91}$

Total surface area:

$S = 6*3\sqrt{91}+54\sqrt{3} =18\sqrt{91}+54\sqrt{3}$

Correct choice is B

3 0

2 years ago

baker has 3 1/2 bags of flour. each bag holds 5 1/3 pounds of flour . how many pounds of flour does the baker have in all.

vlada-n [284]

3.5 since its asking how many he has, he has 3.5 its not askint how many bags he needs or how much a bag holds

7 0

3 years ago

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Study the figure.

tia_tia [17]

Answer:

So we know the formula to calculate the area of the circular sector:

S=(r^2*π*a)/306°=

(5^2*3.14*40°)/360°= (1000*3.14) /360=8.72cm^2 so the right alternative should be the first one ,A.

Step-by-step explanation:

r - radius of the circle

a - corner of the circular sector

S - surface

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3 years ago

Which expression shows the result of applying the distributive property to −2(13x−15)−2(13x−15) ?

defon

D is the answer good luck

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3 years ago

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