Question

One side of a plane triangle is 8 feet long and increasing 4 inches per second, another side is 5 feet, and decreasing 2 inches per second. An included angle is 600 and increasing 20 per second. At what rate is the area of triangle increasing

Answer 1

Answer:

8×4+2-5×2

= 34-10

= 24

= 600 + 20

= 620

= 620 + 24

= 644 is answer.

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