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Liula [17]
3 years ago
12

D.

Mathematics
1 answer:
babunello [35]3 years ago
5 0

Answer:

last one

Step-by-step explanation:

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How do i solve this?
blsea [12.9K]

Hint:

Diameter(d)= 2 radius(r)

circumference= 2πr= πd

1. diameter= 19 × 2 = 38 inches

circumference= 3.18(38) = 119 inches (3 s.f.)

Note that I use 3.18 instead of π because the question states to use 3.14 for π.

Likewise, if you are given the diameter, divide it by 2 to find radius. Let's try a question which only gives you the diameter.

4. radius= 22 ÷ 2 = 11cm

circumference= 3.14(22) = 69.1cm (3 s.f.)

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Answer:

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Step-by-step explanation:

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6 If the altitudes of a triangle meet at one of the triangle’s vertices, then the triangle is
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Answer:

1) a right triangle

Step-by-step explanation:

One of the caractheristics of a right triangle, the one in which the sum of the two sides squared is the hypotenuse squared(Pytagorean Theorem), is also the the altitudes of a triangle meet at one of the triangle’s vertices. So 1) is the answer to this question.

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