an open tank is in the shape of a cube the measure of its inner age is 25 CM calculate the cost of painting the inner side @ rupees 0.15 purpose square CM
Answers
Heya....
Here's your answer....
inner side of cube = 25 cm
inner surface area = lateral surface area + bottom
= 4a² + a = 5a²
= 5 × 25 × 25
= 3125 cm²
cost of 1 me = Rs. 0.15
for 3125 cm² = Rs. 15 × 3125
= Rs. 468.75
Thanks...!!!
XD
Sorry baby 'wink'
Given : An open tank is in the shape of a cube. The measure of its inner edge is 25 cm.
To Find : Cost of painting the inner sides at the rate of Rs. 0.15 per sq. cm.
Solution:
inner edge = 25 cm
tank is open hence no top
So surface area = 5 (25)²
= 3125 cm²
Cost of painting = 0.15 * 3125
= 468.75 Rs
cost of painting the inner sides = 468.75 Rs
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