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
MissTica
3 years ago
12

work out the total area of triangle ABC. calculate the area of AC. sides are:8.2cm and 13.5cm and angle 81 degrees

Mathematics
1 answer:
umka2103 [35]3 years ago
7 0

Answer:

54.67 cm²

Step-by-step explanation:

Given that the two sides of Δ ABC are 8.2 cm and 13.5 cm and the angle included by those sides is 81°.

Let, b = 8.2 cm and c = 13.5 cm and ∠ A = 81°

Hence, area of triangle ABC, Δ = \frac{1}{2} bc \sin A

⇒ Δ = \frac{1}{2} bc \sin 81

⇒ Δ = \frac{8.2 \times 13.5 \times \sin 81}{2}

⇒ Δ = 54.67 cm² (Answer)

You might be interested in
How many triangles can be constructed with angles measuring 10º, 80º, and 90º?
mihalych1998 [28]
How many triangles can<span> you </span>construct<span> given three </span>angle<span> measures whose sum is 180°? The sum of the</span>angle<span> measures of any </span>triangle<span> is 180°. You </span>can<span> use a protractor to </span>construct<span> a </span>triangle<span> given three</span>angle<span> measures. </span>90 90<span>. </span>80<span> 100. 70 110. 60. 120. 50. 130. 40. 140. 30. 150. 20. 160. </span>10. 170. 0. 180. 100.80<span>. 110 70. 12.</span>
3 0
3 years ago
Read 2 more answers
You randomly choose a letter A, and do not replace it. Then, you choose another letter A. What is the probability that both lett
GarryVolchara [31]
You made the choice to choose the letter A, a second time.
3 0
3 years ago
During the mayoral election,two debates were held between the candidates. The first debate lasted 1 2/3 hours.The second one was
butalik [34]

Answer:

2nd debate was 3 hours long.

Step-by-step explanation:

We have been given that during the mayoral election,two debates were held between the candidates. The first debate lasted 1 2/3 hours. The second one was 1 4/5 times as long as the first one.

Let us find the estimate of time spent on 2nd debate.

1 2/3 hours would be approximately 2 hours. 1 4/5 times would be equal to 2 times.

2*2=4

Therefore, the estimated time is less 4 hours.

To find the time spent on 2nd debate, we will multiply 1 2/3 by 1 4/5.

First of all, we will convert mixed fractions into improper fractions as:

1\frac{2}{3}=\frac{5}{3}

1\frac{4}{5}=\frac{9}{5}

Now, we will multiply both fractions as:

\frac{5}{3}\times \frac{9}{5}

\frac{1}{3}\times \frac{9}{1}

\frac{9}{3}\Rightarrow 3

Therefore, the 2nd debate was 3 hours long.

5 0
3 years ago
Find each percent increase round to the nearest percent from $5 to $8
asambeis [7]
First subtract the two numbers:

8 - 5 = 3

Now divide this to the original:

3 / 5 = 0.6

Multiply by 100:

0.6 * 100 = 60%
7 0
3 years ago
I need help ASAP with this
igor_vitrenko [27]

Answer:

2ITR/KVJFCIUYBDTR67E4VHJN, BHJYUG76T89O;LXCS,DVTI9R0OPE;'

Step-by-step explanation:


8 0
3 years ago
Other questions:
  • Find the the measure of angle C
    7·1 answer
  • A company is paying a local radio station to run its commercials. The cost for running commercials is a one-time campaign fee an
    5·1 answer
  • Compute the average speed in m/s of a runner who completes a mile in 4.00 min. Show work please and much appreciated. You will e
    13·1 answer
  • The typical exponential function, y = ax, has asymptote ________ and y-intercept ________.
    14·2 answers
  • 3X+4Y=-8<br> -9X-12Y=-10
    10·1 answer
  • At Wayside High School, 600 boys were asked to
    12·1 answer
  • The sum of a number and 7 is 35
    11·2 answers
  • I need some help pls​
    12·2 answers
  • Pls help me with this
    10·2 answers
  • 1 3/5 gallons of gasoline were used to drive 25 1/2 miles. How many miles per gallons did the car get?​
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!