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krek1111 [17]
3 years ago
11

Equilateral triangle ABC has a perimeter of 96 millimeters. A perpendicular bisector is drawn from angle A to side BC at point M

. What is the length of MC?
16 mm
24 mm
32 mm
48 mm
Mathematics
2 answers:
madam [21]3 years ago
7 0

Answer:

The answer is A, 16 mm

a_sh-v [17]3 years ago
3 0

Answer:

16 mm  

Step-by-step explanation:

Since ABC is an equilateral triangle, all three sides are the same length.  The perimeter is found by adding together all of these equal sides; letting x represent the length of a side of the triangle, this gives us

x + x + x = 96

Combining like terms,

3x = 96

Dividing both sides by 3,

3x/3 = 96/3

x = 32

Since AM is a perpendicular bisector, it splits BC into two congruent sections. This means the length of MC, half of BC, will be 32/2 = 16.

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