Question

A hall has 10m lenght and 8m breadth. lisa runs along the four walls and finally along the diagonal of the hall to catch alica . calculate the total distance covered by lisa

Answer 1

Answer:

Correct option is C)

Required distance =8+6+8+6=

8

2

+6

2

=28+

100

28+10

=38m

Answer 2

Answer:

A hall has 10m length and 8m breadth. Lisa runs along the four walls and finally along the diagonal of the hall to catch Alica . So, the  total distance covered by Lisa is  2 (18 + √41) m

Step-by-step explanation:

If Hall is ABCD

Length (AB) = 10 m

and Breadth BC = 8 m

Lisa runs along the four walls = 10 + 8 + 10 + 8

and finally along the diagonal of the hall to catch alica =  $( \sqrt{10^2} + \sqrt{8^2} )$

Required Distance

= 10 + 8 + 10 + 8 + $( \sqrt{10^2} + \sqrt{8^2} )$

= 36 + √164

= 36+ √4 ×41

=36+ 2√41

= 2 (18 + √41) m

So, the  total distance covered by lisa is  2 (18 + √41) m