the cost of painting the surface of a triangular board at 80 paise per square metre is rs. 176.40. if the height of the board measures 24.5 m, find it base
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cost =176.40 rs
rate = 80p/m
1rs=100p
176.40rs=17640 rs
area of the top surface= cost/rate
=17640/80=220.5
area of traingle =1/2 b×h
220.5=1/2 ×b × 24.5
b=18m.ans
rate = 80p/m
1rs=100p
176.40rs=17640 rs
area of the top surface= cost/rate
=17640/80=220.5
area of traingle =1/2 b×h
220.5=1/2 ×b × 24.5
b=18m.ans
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