एक घन का आयतन 8 cm³ / s की दर से बढ़ रहा है पृष्ठ क्षेत्रफल किस दर से बढ़ रहा है जबकि इसके किनारे की लंबाई 12 cm है
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it's answer is 4cm^3/sec
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The surface area increased at the rate of 8/3 cm³ / s.
Step-by-step explanation:
The volume of a cube increased at the rate of 8 cm³ / s.
Volume of a cube is
where, a is side length.
Differentiate with respect to t.
Substitute and a=12 in the above equation.
Divide both sides by 432.
The surface area of cube is
Differentiate with respect to t.
Substitute and a=12 in the above equation.
Therefore, the surface area increased at the rate of 8/3 cm³ / s.
#Learn more
एक वृत्त की त्रिज्या समान रूप से 3 cm/s की दर से बढ़ रही है । ज्ञात कीजिए कि वृत्त का क्षेत्रफल किस दर से बढ़ रहा है जब त्रिज्या | 10 cm है
https://brainly.in/question/9851054
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