3 years ago

Why is the length of the base of the rectangle the same as the circumference of the circles in the net of a cylinder?

1 answer:

6 0

Answer:

The width of the rectangle is the same as the length of the cylinder (h). The area of each of the two circles is \\ (\\pi r^2\\) and the area of the rectangle is \\ (2 \\pi r times h\\).

Step-by-step explanation:

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When the square of a certain number is diminished by 9 times the number the result is 36?

ArbitrLikvidat [17]

X²-9x=36
minus 36 both sides
x²-9x-36=0
what 2 numbers multiply to -36 and add to -9
-12 and 3
(x-12)(x+3)=0
set to zero
x-12=0
x=12

x+3=0
x=-3

the number is either -3 or 12

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3 years ago

is the following example true or false? if false give a counterexample. The sum of two rational numbers is always rational the s

Lina20 [59]

Answer:

two irrational numbers is always irrational

Step-by-step explanation:

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