A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 5 years ago
Discs of radius 4cm are cut from a rectangular sheet of length 84cm and width 24cm. How many complete discs can be cut out?
anonymous
 5 years ago
Discs of radius 4cm are cut from a rectangular sheet of length 84cm and width 24cm. How many complete discs can be cut out?

This Question is Closed

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0So a 4*4 cm square. Since the width is 24cm then we can fit 6 disks and the height is 84cm so we can fit 21 6*21=126 disks

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Area of the rectangular sheet = 2016 sq. cm Area of one disk = 50.24 sq. cm. So now you just have to divide.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0but my text gives the answer 30

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Textbooks can be occasionally wrong.....

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0And Zed, you must have misunderstood, a disk is a circle, not a square.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Sorry I thought the diameter was 4. So we can have 3 disk in the width (24/8) and 10 disk in the height (84/8). So the total number is 3*10=30

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Because the distance from the center of the circle is 4cm. It must fit in a 8*8cm square.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0@pratu043, the area of 40 disks can be cut out of the sheet, however they will not be the shape of a disk.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0why did you divide the diameter by the length and height of the rectangle????

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0and were did the 10 come from???

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0okay the disks will fit in a 8x8 square. do you understand this?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0where did you get 8x8 from?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0okay because the radius of the circle is 4, its diameter must be 8. and the diameter cannot change so it is 8 for the whole circle. Now because the circle is not longer than 8 cm it must fit into a 8x8 square. do you follow?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0okay so now what i'm trying to find is how many of these squares fit into the rectangular sheet.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0for the width i can fit 3. because 24/8=3 for the height i can fit 10. because 84/8=10.5 but 10.5 won't make a disk so we must we 10. So the the amount of disks=number for width*number for height =3*10 = 30
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.