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lidiya [134]
2 years ago
9

The figure shows a square, a regular pentagon and a regular hexagon put together. What is the measure of ∠BAC

Mathematics
1 answer:
Elan Coil [88]2 years ago
8 0

Answer:

42

Step-by-step explanation:

One angle of a regular pentagon = 108°

One angle of a regular hexagon = 120°.

One angle of a square = 90°

∴ ∠BAC = 360 – (108 + 20 + 90) 360 – 318 = 42°

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Answer:

Step-by-step explanation:

We are given a circle with a partially shaded region. First, we need to determine the area of the whole circle. To do this, we need the measurement of the radius of the circle:

Use the Pythagorean theorem to solve for the other leg of the right triangle inside the circle:

5^2 = 3^2 + x^2

x = 4

The radius is 4 + 1 cm = 5 cm

So the area of the circle is A = pi*r^2

A = 3.14 * (5)^2  

A = 25pi cm^2

To solve for the area of the shaded region:

Ashaded = Acircle - Atriangles

we need to solve for the area of the triangles:

A = 1/2 *b*h

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2 years ago
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3 years ago
The amount of potential energy, P, an object has is equal to the product of its mass, m, its height off the ground, h, and the g
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Answer:

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Step-by-step explanation:

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<em>add 8 on both sides</em>

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3 years ago
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