Question

An open metallic conical tank is 6m deep and its circular
top as a diameter of 16 m. Find the cost of tin plating in
its inner surface at the rate of 0.8 per 100 cm2.​

Answer 1

Step-by-step explanation:

Height=Depth=6m

Diameter=16m

Radius=16/2=8m

Slant height=✓h²+r²

=✓64+36

=✓100

=10m

CSA of cone=πrl

=8*10*22/7

=251.42m²

=2514285.71cm²

Rate of tin plating=Rs.0.8/100cm²

Cost of tin plating=2514285.71*0.8/100

=Rs.20114.28

Hope it helps...