Answer:
(1/3)πr2h.
Step-by-step explanation:
Volume of a cone:
V = (1/3)πr2h
Slant height of a cone:
s = √(r2 + h2)
Lateral surface area of a cone:
L = πrs = πr√(r2 + h2)
Base surface area of a cone (a circle):
B = πr2
Total surface area of a cone:
A = L + B = πrs + πr2 = πr(s + r) = πr(r + √(r2 + h2))
Answer:
90
Step-by-step explanation:
87 is closer to 90 than to 80, so it rounds to 90 when rounded to the nearest 10.
Answer:
x=-1, y=-3. (-1, -3).
Step-by-step explanation:
-6x+4y=-6
-8x+4y=-4
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-6x+4y=-6
-(-8x+4y)=-(-4)
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-6x+4y=-6
8x-4y=4
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2x=-2
x=-2/2
x=-1
-8(-1)+4y=-4
8+4y=-4
4y=-4-8
4y=-12
y=-12/4
y=-3
Fraction: 58/100
Decimal; 5.8
Word Form: fifty eight