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PSYCHO15rus [73]
3 years ago
15

Please Help Look at photo for question.

Mathematics
2 answers:
WARRIOR [948]3 years ago
5 0

Answer:

C. 53.4cm

Step-by-step explanation:

Circumference= 2 x Pi x radius

53.38 or 53.4= 2 x 3.14 x 8.5

zavuch27 [327]3 years ago
4 0

Answer:

The second answer choice from the top

Step-by-step explanation:

The formula for the circumference of a circle is  \pi \cdot d, where d is the diameter of the circle. In this case, this means that the circumference of the circle is 17\cdot 3.14=53.38, or answer choice B. Hope this helps!

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Blizzard [7]

Answer:

15 percent of 90 hours = 13.5 hours

What is 15% of 90?

Y is 15% of 90

Equation: Y = P% * X

Solving our equation for Y

Y = P% * X

Y = 15% * 90

Converting percent to decimal:

p = 15%/100 = 0.15

Y = 0.15 * 90

Y = 13.5

4 0
3 years ago
Read 2 more answers
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max2010maxim [7]

Answer:

(a) LM=12 units, LN=35 units, MN=37 units

(b)8 84 units

(c) 210 square units

Step-by-step explanation:

(a)

Since points L and M have same x coordinates, it means they are in the same plane. Also, since the Y coordinates of L and N are same, they also lie in the same plane

Length LM=\sqrt {(7-7)^{2}+(16-4)^{2}}=12 units

Length LN=\sqrt {(42-7)^{2}+(4-4)^{2}}=35 units

LengthMN=\sqrt {(42-7)^{2}+(4-16)^{2}}=37 units

Alternatively, since this is a right angle triangle, length MN is found using Pythagoras theorem where

MN=\sqrt {(LN)^{2}+(LM)^{2}}=\sqrt {(12)^{2}+(35)^{2}}=37 units

Therefore, the lengths LM=12 units, LN=35 units and MN=37 units

(b)

Perimeter is the distance all round the figure

P=LM+LN+MN=12 units+35 units+37 units=84 units

(c)

Area of a triangle is given by 0.5bh where b is base and h is height, in this case, b is LN=35 units and h=LM which is 12 units

Therefore, A=0.5*12*35= 210 square units

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