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
ICE Princess25 [194]
3 years ago
12

length of a rectangle is 3 times its width.If its perimeter is 24 centimetres what is the area of the rectangle?​

Mathematics
2 answers:
fgiga [73]3 years ago
7 0

Answer:

<h3>27 cm²</h3>

Step-by-step explanation:

The length is 3 × width.

l = 3w

The perimeter is 24 centimeters.

P = 2l + 2w

24 = 2(3w) + 2w

24 = 6w + 2w

24 = 8w

3 = w

The width is 3 centimeters.

l = 3(3)

l = 9

The length is 9 centimeters.

Area is l × w.

A = l × w

A = 9 × 3

A = 27

The area is 27 squared centimeters.

natali 33 [55]3 years ago
5 0

Answer:

27

Width= x

Length= x × 3 =3x

so, 3x+3x+x+x=24

8x=24

x=24/8

x=3

so, length=3(3)=9

width=3

therefore,

Area=9×3

=27

You might be interested in
HELP ME OUT PLS!!!! <br><br>Which Venn diagram is correct?​
ira [324]

Answer:

C

Step-by-step explanation:

A is incorrect because -3.1 is rational.

B is incorrect because 1.14 repeating is rational.

C correct because everything that can be expressed as a fraction is on the left and everything that can't is on the right.

D is incorrect because pi is irrational.

8 0
2 years ago
Read 2 more answers
How do you subtract 42 minutes from 1 hour 25 minutes? explain what to do and why to do it.
ikadub [295]

Answer:

43

Step-by-step explanation:

you change the 1 hour into minute you and 60min to 25 minutes and then you subtract from 42 minutes to get the solution

8 0
3 years ago
PLEASE HELP ASAP! WILL GIVE BRAINLEIST!<br> Find the area of the shaded region. Use pi = 3.14
Semmy [17]

Answer:

Step-by-step explanation:

Square

The side length of the square = 8 cm

The area of the square = s^2

The area of the square = 8^2 = 64

Circle

r = d/2

r = 8/2

r = 4

Area of the circle = pi r^2

Area of the circle = 3.14 * 16

Area of the circle = 50.24

Shaded Area

Area of the Shaded area = area Square - Area Circle

                                          = 64 - 40.24

                                          = 23.76

4 0
3 years ago
A sphere with a diameter of 30 inches is placed in a cube. The sphere touches the lateral faces
Nina [5.8K]

Answer:

a) 30 inches × 30 inches × 30 inches

b) 27,000 inches³

c) 14,130 inches³

d) 12,870 inches³

Step-by-step explanation:

Edge of the cube = diameter = 30 inches

Volume of cube = s³

30³ = 27000 inches³

Radius = 30/2 = 15

Volume of sphere:

(4/3) × 3.15 × 15³

14130 inches³

Difference:

27000 - 14130

12870 inches³

5 0
3 years ago
Solve this system of equations: 2x - y = 7 5x + y = 21
JulsSmile [24]
7x= 28 so x is 4 and y is 1.. So (4,1)
7 0
3 years ago
Other questions:
  • IF 48% of the students in a class are girls:
    12·1 answer
  • Find the slope of the line. <br><br> a. 7<br> b. -7<br> c. 1/7<br> d. -1/7
    5·2 answers
  • Answer this ASAP, please.
    15·1 answer
  • Find the sum of the series described by an=-32, d=2 and n=17
    12·1 answer
  • Solve the following equation for x to find the total number of people who became members of a social networking site for a certa
    13·2 answers
  • Choose the best graph that represents the linear equation:<br> 6x = y + 8
    13·1 answer
  • Mrs. Austin teaches forty-eight students. One-third of her students are out sick with the flu. How many students are sick?
    7·1 answer
  • Cos(theta)= -.9041, 180degress&lt; theta &lt;270degress
    9·1 answer
  • (6 × 10^4 + 3 × 10^4)(3 × 10^2) What is the value of the expression in scientific notation?
    6·1 answer
  • Gretchen rode her snowmobile 1 1/4 miles to a snowmobile trail. She rode on the trail for 5 5/6 miles and then rode back home. W
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!