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quester [9]
3 years ago
11

What is the surface area of 2cm, 5cm, and 2cm

Mathematics
1 answer:
noname [10]3 years ago
6 0
2*5 = 10
2*2 = 4

4(10) + 2(4) = 40 + 8 = 48

ans) 48cm
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In the figure shown e is the midpoint of segment bd and ae = ec . choose the correct statement(s)
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Answer:

Triangle ABE and triangle CDE are congruent by using SAS theorem.

Step-by-step explanation:

It is given that e is the midpoint of BD and AE=EC.

BE\cong DE             (E is midpoint of BD)

Angle AEB and angle CED are vertical opposite angle and the vertical opposite angles are always same.

\angle AEB\cong \angle CED

AE=EC                 (Given)

So by using SAS theorem of congruent triangles.

\triangle ABE\cong \triangle CED

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3 years ago
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Answer:

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Step-by-step explanation:

Interior angle = 180 - exterior

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Alternate approach for no. of sides:

360/n = each exterior angle

360/n = 20

n = 360/20 = 18

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