1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sergiy2304 [10]
3 years ago
15

HELP. SUPER EASY MATH PROBLEM. 20 POINTS

Mathematics
2 answers:
Stells [14]3 years ago
7 0

The area of the shaded = the area of the sector - the area of the isosceles triangle.

Split the isosceles triangle in half, each of those triangles is a 30-60-90 triangle, where the radius is the hypotenuse.

Ratio of short leg: long leg: hypotenuse= x : x√3 : 2x

Given hypotenuse = radius = 27.8 in

so short leg = 27.8 / 2 = 13.9 in

long leg = 13.9 √3 = 24.1 in

Area of this isosceles triangle = 24.1 x 13.9 = 334.99 in^2

Area of sector = (150 / 360) π r^2

= (150 / 360) (3.14) (27.8)^2

= 0.4 * (3.14) (772.84)

= 970.7 in^2

Area of shaded = 970.7 in^2 - 334.99 in^2 = 635.71 in^2

= 635.7 in^2 (nearest tenth)

Answer:

635.7 in^2

Stells [14]3 years ago
6 0

First find the area of the sector of 150 degrees:

150/360 x PI * 27.8^2 = 1011.6452 in^2

Now find the area of the triangle formed by the 150 degrees and the radius 27.8

first find the length of the chord ( the base of the triangle)

c^2 = 27.8^2 + 27.8^2 - 2 * 27.8 * cos(150) = 53.71

now find the height by using half the chord length as the base and using the Pythagorean theorem:

26.855^2 - 27.8^2 = height^2

height = 7.19

The area of the triangle is 1/2 x base x height = 1/2 x 26.855 x 7.1952 = 96.605

multiply by 2 because we made 2 right triangles: 96.54 x 2 = 193.21 square inches.

Now the area of the shaded region is the area of the sector minus the area of the triangle:

1011.6452 - 193.21 = 818.4352

Rounded to nearest tenth = 818.4 in^2

You might be interested in
Please help I’m desperate
JulijaS [17]

Answer:

#2 is 512mm³

#3 is 120m³

Step-by-step explanation:

#2

8³ which # 8×8×8=512mm³

#3 v=bh

v=20×6

v=120m³

4 0
3 years ago
Whats 200 divided by 3
timofeeve [1]

Answer: It's 66.6 and no it's not finna be called the devil's number. I rebuke that in the name of the Lord. lol

4 0
3 years ago
How do you find the roots of this problem?
Sonja [21]
Simplifies the problem, you divide by a value which if plugged into x would equal 0. One example is dividing by (x-1) as x=1 results in 0
5 0
3 years ago
Some decimals are rational numbers and some are irrational. Which decimal does NOT represent a rational number?
Ugo [173]

Answer:

D

Step-by-step explanation:

8 0
3 years ago
Two figures are similar. One is 18 inches tall and the second is two feet tall.What is the scale factor. Not a multiple choice q
sladkih [1.3K]

Answer:

3:4

Step-by-step explanation:

Compare the heights:  18 in and 24 in.

Then find the scale factor through division:  18/24 = 3/4 or 3:4

3 0
3 years ago
Other questions:
  • Simplify the following expression.<br><br> √49^8
    11·1 answer
  • Can someone help me please
    13·2 answers
  • The current student population of the Brentwood Student Center is 2,000. The enrollment at the center increases at a rate of 4%
    9·1 answer
  • A square plot of land has a building 60ft long and 40ft wide at one corner. the rest of the land outside the building forms a pa
    9·1 answer
  • Trust Fund A deposit of $10,000 is made in a trust fund that pays 7% interest,compounded continuously.it is specified that the b
    10·1 answer
  • suppose that the population of deer in a state is 1,500 and is growing 2% each year. Predict the population after 4 years
    11·1 answer
  • Please help me with this. i don't understand it.
    7·2 answers
  • Please HELP, PLZZZZ, PLZZZZZ
    9·1 answer
  • What is the answer to 153÷1/4=?
    6·2 answers
  • Help me pls thankyouuuuuuu
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!