In a stadium a running track of 440 m is...

In a stadium a running track of 440 m is to be laid out enclosing field. The shape of track is a rectangle with a semi-circle at each end. They want to keep maximum area of rectangular portion.

Given answer of the question:
At what value of x area will be maximum ?

A

120

B

110

C

100

D

220

Verified by Experts

The correct Answer is:

B

In a stadium a running track of 440 m is to be laid out enclosing field. The shape of track is a rectangle with a semi-circle at each end. They want to keep maximum area of rectangular portion. Given answer of the question:At what value of x area will be maximum ?