Question

I- Calcule o valor de x

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Answer 1

Usa-se a Teorema de Pitágoras

Fórmula (c²=a²+b²)

A) x²=21²+28²

x²=441+784

x²=1225

$x = \sqrt{1225}$

x=35

B) 4²=x²+2²

16=x²+4

x²=16-4

x²=12

$x = \sqrt{12}$

x=3,462

C) 60²=x²+10²

3600=x²+100

x²=3600-100

x²=3500

$x = \sqrt{3500}$

x=59,16

D) 25²=x²+20²

625=x²+400

x²=625-400

x²=225

$x = \sqrt{225}$

x=15