Question

hey friends plzz answer these questions


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Answer 1

Q1..√176+√2401=√176+49=√225=15 Ans
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Q2..If we take m²+ 1 = 6, then m² = 5The value of m will not be an integer.If we take m² − 1 = 6, then m² = 7Again the value of m is not an integer.Let 2m = 6m = 3Therefore, the Pythagorean triplets are 2 × 3, 32 − 1, 32 + 1 or 6, 8, and 10.Q3..x+4=8⇒x=4∴√x²=√4²=√16=4 Ans.

Q4..√x=5
       By squaring both side
       x=25
      ∴x²=25²⇒x²=625

Q5..Area of square field=441 m²
       Area=side²
       441=a²⇒a=√441=21 
∴Perimeter=4a=4*21=84 m
Q6..Let the breadth be x

        legth=2x
       Area of ractangle=l*b
                          2450=2x*x
                          2450=2x²
                       2450/2=x²
                          1225=x²
                                x=35 m
              2x=35*2=70 m
    ∴ Perimeter=2(l+b)
                       =2(35+70)
                       =2(105)
                       =210 m .

Q7..√15625=125
       √156.25=12.5
       √1.5625=1.25
      Hence, √156.25+√1.5625=12.5+1.25=13.75 

Q8..√2304=48 and √1764=42
       √0.2304=0.48  and  √0.1764=0.42
     ∴√0.2304+√0.1764/√0.2304-√0.1764=0.48+0.24/0.48-0.42
                                                               =0.9/0.06=15 Ans



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