40.20
the equilateral triangle shown is rotated about line a. each
side of the triangle measures 20 mm.
what shape is created by the rotation and what is the
approximate circumference of the base?
circumference of a circle: c = 2nr
o a cylinder with a circumference of about 63 mm
o a cylinder with a circumference of about 126 mm
o a cone with a base circumference of about 63 mm
o a cone with a base circumference of about 126 mm
save and frit

answer: $201

step-by-step explanation: to get the answer, you first get 3 nieces that he sold and multiply it by 67 and get $201, so he earned $201 selling his nieces.

b

step-by-step explanation:

the equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (0, 4) and (x₂, y₂ ) = (3, - 5) ← 2 points on the line

m = = = - 3

with m = - 3 and (a, b) = (3, - 5), then

y - (- 5) = - 3(x - 3), that is

y + 5 = - 3(x - 3) → b

step-by-step explanation:

the answer is 89 d

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