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dedylja [7]
3 years ago
5

Given that h=10, b=5, and r=3.8, find the area of the unshaded region. Use 3.14 for π as necessary. All answers are expressed in

square units.
A. 70.34
B. 36.93
C. 25
D. 20.34

Mathematics
1 answer:
Vesna [10]3 years ago
8 0

The area of the circle is found using the formula Area = PI x r^2

The area of a triangle is found using the formula Area = 1/2 x base x height.

Using the given dimensions:

Area of the circle = 3.14 x 3.8^2 = 45.3416 square units.

The area of the triangle is 1/2 x 5 x 10 = 25 square units.

To find the area of the unshaded part, subtract the area of the shaded triangle from the circle:

Area = 45.3416 - 25 = 20.3416

Round to two decimal places = 20.34

The answer is D. 20.34

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Question in pic. please answer!
Aleksandr [31]

Answer:

The angles from largest to smallest are:

∠A

∠B

∠C

Step-by-step explanation:

We can see in the diagram that

AB = 7

AC = 8

BC = 9

The angles opposite to sides are as follows:

∠A is opposite to BC

∠B is opposite to AC

∠C is opposite to AB

The angle opposite to the largest side of the triangle is the largest and the angle opposite to smallest side of the triangle is the smallest in measurement

Arranging the sides from largest to smallest:

BC, AC, AB

Similarly the angles opposite them will be arranged according to them

∠A, ∠B, ∠C

Hence,

The angles from largest to smallest are:

∠A

∠B

∠C

8 0
3 years ago
Check me please ( brainlyest answer )
drek231 [11]
Your answer to the first one is incorrect.

We can cut the plan into two figures, a rectangle with side lengths of 4 cm and 5 cm and a rectangle with side lengths of 1 and 2 cm.

Perimeter of a Rectangle:

P = 2(l + w)

P = 2(4 + 5)

P = 2(9)

P = 18

Perimeter of a Rectangle:

P = 2(l + w)

P = 2(2 + 1)

P = 2(3)

P = 6

Add up the perimeters:

18 + 6 = 24

So the total perimeter is 24.

For the 2nd one, your answer is also incorrect.

We multiply 5 to the perimeter of the plans:

5 * 24 = 120

Not sure what the third one is asking.

For the fourth one we just multiply 'k' to the perimeter:

24 * k = 24k
5 0
3 years ago
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2 years ago
A card is picked at random from a deck of cards, after putting it back another card is picked at random. ​Are these two events d
kvv77 [185]

Answer: Independent event

Step-by-step explanation:

When two events are independent of each other, this means that the probability that one event will occurs does not in any way affects the probability of the occurrence of the other event.

For example, card is picked at random from a deck of cards, and after putting it back,thne another card is picked at random. ​The probability of picking the cards is not affected by each other since it is put back.

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The second one is true
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3 years ago
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