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
anastassius [24]
3 years ago
12

A rectangle has a width of 9 units and a length of 40 units. What is the length of a diagonal?

Mathematics
2 answers:
Natali [406]3 years ago
5 0

Answer:

Length of a diagonal = 41 units

Step-by-step explanation:

Given : A rectangle has a width of 9 units and a length of 40 units.

To Find : the length of a diagonal

Solution :

Since all angles of rectangle measures 90°.

So, to find length of diagonal use Pythagoras theorem i.e.


(Hypotenuse)^{2}=(Perpendicular )^{2}  + (Base)^{2}


Refer attached figure

Since ΔADC is right angled triangle


So, (AC)^{2}=(AD )^{2}  + (DC)^{2}


Where AC is the diagonal

AD = Length = 40 units

DC= Width = 9 units


Thus, (AC)^{2}=(40 )^{2}  + (9)^{2}


(AC)^{2}=1681


AC=\sqrt{1681}


AC=41


Hence, Length of a diagonal = 41 units

DedPeter [7]3 years ago
3 0
Pythagoras tells us that the diagonal is √(9²+40²) = 41.
Answer C.
You might be interested in
What is the circumference of a circle with a radius of 14in
Colt1911 [192]

Answer: diameter = 2R = 28

Circumference = 2pieR

= 28pie

= 87.964594300514

Step-by-step explanation:

I used a calculator for this..

6 0
3 years ago
Read 2 more answers
If im was born on june 9th of 1993 from 2015 she still alive how old is she now?
Vladimir79 [104]
If you're born on June 9th in 1993, on June 9th in 2015 you would have your 22nd birthday (2015-1993=22).

So you're 22 years old, and, as of today, 17 days tool (22 years 17 days).
7 0
3 years ago
I need this quick!!What is the surface area of the square pyramid?<br> square units
AlexFokin [52]

Answer:

16

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
3x^2-12+(x-4)(2-x)-(x^2-4x+4)
bogdanovich [222]

Answer:

x² + 10x - 24

Step-by-step explanation:

3x² - 12 + (x - 4)(2 - x) - (x² - 4x + 4)

= 3x² - 12 + (2x - x² - 8 + 4x) - x² + 4x - 4

= 3x² - 12 + 2x - x² - 8 + 4x - x² + 4x - 4

= x² + 10x - 24

4 0
3 years ago
What is the ratio of 18 wolverines to 18 black bears? <br> HELP
Setler [38]

Answer:

18:18

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Use the linear approximation (1+x)^kapprox 1+kx to find an approximation for the function f(x) for values of x near zero.
    11·1 answer
  • 13. Higher Order Thinking Kyra has a rock collection. When she puts her rocks into 2 equal piles, there are no rocks left over.
    7·1 answer
  • Lexi needs to buy a hundred and five bases for a party each package has six faces how many packages should Lexi by show work
    15·1 answer
  • How do I do this problem?
    9·1 answer
  • Find the slope of the line with these two pair of points (10,-5) and (8,-7)
    8·1 answer
  • Find the sum of 5x + 20 and the opposite of 20. Write an equivalent expression in standard form. Do not include any spaces in yo
    5·1 answer
  • What is the slope of (-3,-6) and (4,7)​
    8·1 answer
  • Answer part B please
    5·2 answers
  • WILL MARK BRAINLIEST
    11·1 answer
  •  HELP <br> Dieing from math in the picture. I think I did it wrong. Please help. :(
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!