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
Lynna [10]
2 years ago
12

Rounded to the nearest tenth, what is the perimeter of rectangle ABCD?

Mathematics
1 answer:
kvv77 [185]2 years ago
7 0
  • <em>Answer:</em>

<em>54.6 cm</em>

  • <em>Step-by-step explanation:</em>

<em>Hi there ! </em>

<em>T30° => AD = AC/2 = 20cm/2 = 10 cm</em>

<em>T.Phytagoras</em>

<em>CD = √AC² - AD² </em>

<em>= √20² - 10²</em>

<em>= √400-100</em>

<em>= √300</em>

<em>= 10√3</em>

<em>= 10×1.73</em>

<em>= 17.3 cm</em>

<em>P = 2AD + 2CD</em>

<em>= 2×10cm + 2×17.3cm</em>

<em>= 20cm + 34.6cm</em>

<em>= 54.6 cm</em>

<em>Good luck ! </em>

You might be interested in
If three points are collinear, they are also coplanar
e-lub [12.9K]

My explanation is attached below.

6 0
3 years ago
Read 2 more answers
Mum bought a litre of orange juice. She filled 5 glasses and had 1/5 of a litre left. How much was in each glass?
avanturin [10]
1/5 of a litre is 0.2 litres
1 litre minus 0.2 litres is 0.8 litres so
0.8 divided by 5 (glasses) is 0.16 litres in each glass
7 0
3 years ago
There are 20 bicycles and 10 cars parked in the parking lot. Each bicycle had two wheels and each car had four wheels. How many
KatRina [158]
20 bicycles each of 2 wheels
So 20 x 2 = 40 wheels

10 cars each of 4 wheels
So 10 x 4 = 40 wheels

Total = 40 + 40
= 80 wheels
6 0
3 years ago
Ms.harper estimates that 125 students will attend the school dance. There was an actual total of 148 who attended the dance. Fin
Vladimir [108]

Answer:

The answer would be 118.4%

Step-by-step explanation:


4 0
2 years ago
Two 6-sided dice are rolled at the same time. How many outcomes correspond to the event that the sum of the numbers is 5?
Helen [10]
In rolling a die, there are 6 possible outcomes. Each face is numbered from 1 to 6. The possible combinations of numbers so that their sum is 5 is, 1 - 4, 2 - 3, 3 - 2, 4 - 1. Thus, the answer is that they are four possible outcomes corresponding to the given event. 
5 0
2 years ago
Other questions:
  • when a 3-digit number is rounded to the nearest ten and to the nearest hundred the answer is the same. what is one possible numb
    8·1 answer
  • Can someone help with this please
    7·2 answers
  • Subtract the two expressions. 2b + 4 from -8b - 12
    9·2 answers
  • Question and choices are in the photo please explain the answer
    7·2 answers
  • The random variable KK has a geometric distribution with mean 16. Which of the following is closest to the standard deviation of
    6·1 answer
  • What two numbers have a product of 34 and a sum of 19?
    12·1 answer
  • 9<br> Find the values of r and y.<br> с<br> A<br> 95°<br> B<br> 4x<br> ro<br> D<br> E
    5·1 answer
  • What is the solution of the system of equations? Enter the solution as an ordered pair (use decimal rounded to the nearest hundr
    10·1 answer
  • Solve for f.<br> –9 + 2f &gt; – 3
    15·1 answer
  • Alberto is making a budget. He owes a cell phone bill of $60 per month for 23 more months, plus the fees for any extra usage suc
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!