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My name is Ann [436]
3 years ago
9

Question B work out angle BXC give reason for each angle you work out.

Mathematics
2 answers:
amm18123 years ago
4 0
Here's what I got. I hope that you understand it and can word it better than I can. 

likoan [24]3 years ago
4 0

Answer:

m \angle BXC = 70\°

Step-by-step explanation:

According to the figure,

\angle XBC \cong \angle AXY, by corresponding angles definition.

So, m \angle XBC = 55\°

Then, m\angle XBC = m\angle XCB, by isosceles triangle theorem.

m\angle XCB=55\°

Now, m\angle XBC + m\angle XCB + \angle BXC = 180\°, by internal angles theorem.

Replacing and solving for \angle BXC}, we have

55 +55 + m\angle BXC = 180\\m\angle BXC = 180-110=70\°

Therefore, m \angle BXC = 70\°

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Zielflug [23.3K]
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19. When baking a cake, you have a choice of the following pans:
dimaraw [331]

The answer is

round cake - 82.42 in²

rectangular cake - 114 in²

Round cake:

d = 7 in

r = d/2 = 7 in / 2 = 3.5 in

h = 2 in

The surface are of a cylinder is:

A = 2πr² + 2πrh

The surface are of the round cake (which is actually a cylindrical cake) excluding the bottom is:

A = 2πr² + 2πrh - πr²

A = πr² + 2πrh

A = 3.14 * 3.5² + 2 * 3.14 * 3.5 * 2

= 38.46 + 43.96

= 82.42 in²

Rectangular cake:

w = 6 in

l = 9 in

h = 2 in

The surface are of a rectangle is:

A = 2wl + 2wh + 2lh

The surface are of the rectangular cake excluding the bottom is:

A = 2wl + 2wh + 2lh - wl

A = wl + 2wh + 2lh

A = 6 * 9 + 2 * 6 * 2 + 2 * 9 * 2

= 54 + 24 + 36

= 114 in²

Step-by-step explanation: This answer is not mine but JcAlmighty’s so all credits go to them.

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3 years ago
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