A closed rectangular tank 180cm height, 300cm long and 200cm wide is made of metal sheet which cost #8.50 per square metre. Calculate the cost of metal sheet used in making the tank.

Question

Reiny · Answer

180cm height, 300cm long and 200cm = 1.8 m by 3 m by 2 m So the surface area = 2(1.8)(3) + 2(1.8)(2) + 2(3)(2) m^2 = .... multiply this by $8.50 to get the cost

Blessing · Answer

Change cm to m , that is divide by 100 , 180/100=1.8 m, 300/100=3 m , 200/ 100=2m . Formula : 2( l* b+b*h+h*l) , 2(3*2+2*1.8+3*1.8) =15. 2(15)=30. then multiply 30 by #8.50= #225.