if A varies directly as the square of b,A=24 when b=6, find A when b=21
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if A varies directly as the square of b,A=24 when b=6, find A when b=21
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Verified answer
Answer:
294
Step-by-step explanation:
Find the constant (k) of the variation
A = kb²
24 = k(6)²
24 = 36k
k = 24/36 or 2/3
Find A
A = kb²
A = (2/3)(21)²
A = (2/3)(441)
A = 294
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