Question

11. An open tank is in the shape of a cube. The measure of its inner edge is 25 cm. Calculate
the cost of painting the inner sides at the rate of 0.15 per sq cm.
​

Answer 1

Step-by-step explanation:

Balveeer,sushant and faizal are climbing the steps to a hill top.Balveer is at the step p. Sushant is 10 steps ahead and faizal is 6 steps behind balveer. where are sushant and faizal? the total number of steps to the hill top is 3 steps less than 8 times what balveer has reached.Express the total number of steps using p

Answer 2

$\Huge\tt{{\color{navy}{{\underline{ꪖɴ}}}}{\color{magenta}{{\underline{sᴡ}}}}{\color{blue}{{\underline{ᴇʀ}}}}{\color{skyblue}{:}}}$

$\bf\red{G}{I}\orange{V}{E}\red{N}{༻}$

$\red\bigstar$ An open tank is in the shape of a cube.

$\red\bigstar$ The measure of its inner edge is 25 cm.

$\bf\red{TO \: FIND :}$

$\red\bigstar$ Calculate the cost of painting the inner sides at the rate of Rs. 0.15 per sq. cm.

$\bf\red{SOLUTION :}$

Tank is open so, we will not include the top side of the tank.

$\red\bigstar$ Surface Area of tank = 5a²

→ Surface Area of tank = 5 (25)²

→ Surface Area of tank = 5 × 625

→ Surface Area of tank = 3125 cm²

Cost of painting = 0.15 × 3125

→ Cost of painting = Rs. 468.75

$\small\boxed{{\sf\red{Hence, \: the \: cost \: of \: painting \: the \: inner \: sides \: is \: Rs. \: 468.75}}}$