Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
the altitude of a triangle is increasing at a rate of 1 cm/min while the area in increasing at a rate of 2 cm^2/min. At what rate is the base of the triangle changing when the altitude is 10 cm and the area is 100cm^2?
 2 years ago
 2 years ago
the altitude of a triangle is increasing at a rate of 1 cm/min while the area in increasing at a rate of 2 cm^2/min. At what rate is the base of the triangle changing when the altitude is 10 cm and the area is 100cm^2?
 2 years ago
 2 years ago

This Question is Closed

HeroBest ResponseYou've already chosen the best response.2
What's the formula we use here?
 2 years ago

mr.lunaBest ResponseYou've already chosen the best response.0
is there a shorcut? i feel like i just have to double something then square it.
 2 years ago

HeroBest ResponseYou've already chosen the best response.2
1. Draw diagram, include given info 2. Apply proper formula 3. Take derivative of formula 4. Input values into formula 5. Isolate what you need to find
 2 years ago

HeroBest ResponseYou've already chosen the best response.2
I skipped a step which is to find other necessary values
 2 years ago

amistre64Best ResponseYou've already chosen the best response.0
h': 1 cm/min A': 2 cm^2/min. b'?: h=10 cm, A=100cm^2 A = bh/2 A' = b'h/2 + bh'/2 b' = (A'  bh'/2)(2/h)
 2 years ago

mr.lunaBest ResponseYou've already chosen the best response.0
given: dA/dt= 1 dAREA/dt=2 A=10 AREA = 100
 2 years ago

mr.lunaBest ResponseYou've already chosen the best response.0
im gona try and work it out then ill shoot you guys an answer. give me a sec
 2 years ago

amistre64Best ResponseYou've already chosen the best response.0
b' = (A'  2Ah'/2h)(2/h) b' = (A'  Ah'/h)(2/h) b' = (2  100(1)/10) (2/10) b' = (2  10) (1/5) b' = 8/5 maybe?
 2 years ago

amistre64Best ResponseYou've already chosen the best response.0
..... i thought this was bed :)
 2 years ago

amistre64Best ResponseYou've already chosen the best response.0
becasue A = bh/2; Area = base*height/2 ... solveing for base we get; base = 2*Area/height
 2 years ago
See more questions >>>
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.