Question

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Answer 1

Answer:

Diagonal of sq = a×root2

where a = side of sq

perimeter of sq = 20

a = 20/4 = 5cm

thus diagonal = 5root2 cm.

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Answer 2

Answer:

AC=5√2 or 7.07

Step-by-step explanation:

Perimeter of Square = 20

Length of one Side = 20/4 = 5

AC is a Diagonal

Using Pythogoras Theorem,

(Diagonal)²=(Side)²+(Side)²

(AC)²=(5)²+(5)²

AC²=25+25

AC² = 50

AC = √50

AC = 5√2