Math, asked by patidarakshita2001, 7 months ago

rectangle alhere
A Wire
Wire of length 340 mm is to be
Cut into two parts. One of the
parts is to be made into a gure
and other into a
sides are in the ratio of 1:2.
What is the length of the side
of the squre (in mm) such
that the Combined area of the
sowee and the rectangle is a
Minimum​

Answers

Answered by tsuhas390
0

Answer: 40mm

Step-by-step explanation:

Perimeter of rectangle = 2  

a

+  

2a

= 2a

3 3

Length of square =  

340 - 2a

4

Total area =  

340 - 2a

² +  

2ae

= f'(a)

4  4

Condition for minimum area f'(a) = 0

2  

340 - 2a

 

- a

+  

4

a = 0

4 2 9

4

a =  

1

(340 - 20)

9 4

a = 90

Length of the square =  

340 - 2a

= 40 mm

4

mark me as brainliest please!!!

Answered by preetsojitra8285
0
Fuvxhkkvkkfnfndbbddbfb
Similar questions