Question

the cost of painting the top surface of a triangular board at 80 paise per square meter is 176.40 if the height of the board measures 24.5 find its base

Answer 1

Answer:

Rate of painting is 0.8 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