find the length of the diagonal of square of side 20cm. Also find its perimeter
Answers
Answered by
1
Answer:
diagonal = 28.28427
Perimeter
Step-by-step explanation:
If we split the square into 2 triangles
1st side = 20cm
2nd side = 20cm
Pythagorean theorem formula
a² + b² = c²
20² + 20² = c²
400 + 400 = c²
800 = c²
c = 28.28427 cm
Perimeter = 20+20+20+20 = 80
Answered by
2
Answer:
Step-by-step explanation:
Diagonal of a square = √( side² + side² )
= √ ( 20² + 20² )
= √800
= 40√2 cm
Perimeter of square = 4 × side = 4 × 20 = 80cm
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