1.

Solve:4.2 × 4.2 ÷ √17.64 × √27.041). 34.52). 21.84 3). 22.834). 4.2

Answer»

We can WRITE,

⇒ √17.64 = √(1764/100) = 42/10 = 4.2

⇒ √27.04 = √(2704/100) = 52/10 = 5.2

Hence,

⇒ 4.2 × 4.2 ÷ √17.64 × √27.04

= 4.2 × 4.2 ÷ 4.2 × 5.2

= 4.2 × 1 × 5.2

= 21.84



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