Question

the cost of painting the top surface of a triangular board at 80 paise per metre sq. is rs. 176.40. If the height of the board measures 24.5m , find its base.

Answer 1

rate of painting is .8 Rs per sqm 
then total area =176.4/.8 
=220.5 m2 
now 1/2 x b x h = 220.5 
and h = 24.5 m 
then b= 220.5/(1/2 x 24.5 ) 
= 220.5/12.25 
= 18 m

Answer 2

Answer:

Step-by-step explanation:

ate of painting is .8 Rs per sqm

then total area =176.4/.8

=220.5 m2

now 1/2 x b x h = 220.5

and h = 24.5 m

then b= 220.5/(1/2 x 24.5 )

= 220.5/12.25

= 18 m