Question

Find the cost of painting all around outer surface of cubodial tank with lid of 4m long, 3m wide and 2m high at 50 paise per cm square ​

Answer 1

Step-by-step explanation:

total surface area=2(ab+bc+ac)

=2(12+6+8)

=52m²=520000cm²

cost =50 paise per cm²

cost of painting=520000×50

=2600000paise=260000 rupees

Answer 2

length of tank = 4m

breadth of tank = 3m

height of tank = 2m

for finding the cost, we will need to find the TSA

TSA = 2 ( lh + lb + bh )

TSA = 2 ( 4*2 + 4*3 + 3*2 )

TSA = 2 ( 8 + 12 + 6 )

TSA = 16 + 24 + 12

TSA = 52m^2

cost for cm^2 = 50p

cost for 0.0001 m^2 = 50p

cost for 1m^2 = 500000p

cost for 52m^2 = 500000*52

cost = 2600000 paise