Question

9. An open tank is in the shape of a cube. The length of its inner edge is 1.5 m. Find the cost of painting its inner surface at the rate of rs1.20 per m².
​

Answer 1

Step-by-step explanation:

Hence the cost of painting the inner side of the tank is rupees 468.75

Step-by-step explanation: Surface area of the tank is:

= 5 x 25 x 25

= 3125

Cost of painting is : 3125 x 0.15

= 468.75