Answer:
Solution: , 3.5, -15, 5
Not a solution: 129 and
Step-by-step explanation:
20 ≥ 5 + 3x
3x + 5 ≤ 20
3x ≤ 20 - 5
3x ≤ 15
x ≤ 5
x must be LESS than or EQUAL to 5
The total surface area of a cone is given by :
Put r = 2r and l = 2l in the above formula
Hence, the total surface area of the cone is .
Washer 225
Dryer 425
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