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The perimeter of a square is 56 cm. What is the approximate length of its diagonal?

The perimeter of a square is 56 cm. What is the approximate length of its diagonal?
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2 votes
The perimeter of a square is 56 cm. What is the approximate length of its diagonal?

User Nkoniishvt
by
7.2k points

2 Answers

6 votes
Since we know a square has 4 equal sides
and is equal to to exact right triangles.
USing the formula for Perimeter
l+l+w+w=P or 2L+2W=P
56cm÷4=14 so now we have
(2)14+(2)14=P
P=14cm^2
The slant length on a triangle is equal to L
Slant lenght=14

User Ryan LeCompte
by
8.2k points
2 votes
19.8 is the correct answer because d=square root 2P4=square root 2x564≈19.79899cm
User Straff
by
8.3k points
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