Answer:
<h2>====LEARN WITH REY====</h2>
What property can I use for this question: 3x57
In this property there is the property of the multiplication part
Step-by-step explanation:
If calculated, the result is
3 x 57 = 171
<h3>
#Study with brainly </h3><h3>
# Learn with rey</h3>
<h3>
Question code : 5.2.7</h3><h3>
Course : Math</h3><h3>
Theory : Splash</h3>
Check the picture 1.
The regions contained in an odd number of these 5 circles are
the pink colored region, contained only in the circle with radius 2,
and the yellow regions, each contained in the intersection of 2 small circles and the third large circle.
So what we need to determine is the "area pink + area yellow".
Consider the second picture.
Let A2 be the area of the right isosceles triangle, and A1 be half of the yellow region.
the region A2 + A1 is called a sector, and it is 1/4 of the area of a unit circle.

Thus, the overall yellow region is

The purple area is:
Area of large circle - 4*(Area of 1 small circle) + yellow region.
(because subtracting all 4 small circles means that each of the 4 separate yellow regions have been subtracted twice)

Finally, the total area is :

(units squared)
Answer:

square units
Answer:23 mm
Step-by-step explanation:
add both 15 and 8 because they are as long as the one on the bottom
Hence, the measure of the angles are
∠q = 65°
∠r = 65°
∠s = 50°
∠t = 65°
∠b = 64°
<h3>Calculating the measure of angles </h3>
From the question, we are to determine the measure of the angles.
Calculating the measure of angle q
∠q + 65° + (180° - 130°) = 180° (<em>Sum of angles in a triangle</em>)
∠q + 65° + 50° = 180°
∠q + 115° = 180°
∠q = 180° - 115°
∠q = 65°
Calculating the measure of angle r
∠r = ∠q (<em>Corresponding angles</em>)
Therefore,
∠r = 65°
Calculating the measure of angle s
∠s + ∠r + 65° = 180° (<em>Sum of angles on a straight line</em>)
∠s + 65° + 65° = 180°
∠s + 130° = 180°
∠s = 180° - 130°
∠s = 50°
Calculating the measure of angle t
∠t = ∠r <em>(Vertically opposite angles</em>)
Therefore,
∠t = 65°
Second diagram
Calculating the measure of angle b
∠b = ∠a <em>(Corresponding angles</em>)
Therefore,
∠b = 64°
Learn more on Calculating the measure of angles here: brainly.com/question/24607467
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Answer:
d
Step-by-step explanation: