Question

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if ruit 5=2.236 &ruit 10=3.162 find the value of ruit 10+ ruit 20+ ruit 40 -ruit5 -ruit 80

Answer 1

Answer :

The required value is 2.778

Step - by - step explanation :

√5 = 2.236

√10 = 3.162

√10 + √20 + √40 - √5 - √80

⇒ √10 + 2√5 + 2√10 - √5 - 4√5

⇒ 3. 162 + 2 × 2.236 + 2 × 3.162 - 2.236 - 4 × 2.236

⇒ 3.162 + 4.472 + 6.324 - 2.236 - 8.944

⇒ 13.958 - 11.18

⇒ 2.778

Hence, the required value is 2.778