Fun with maths

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Across
  1. 3. x-y+3=0 a number is 27 more than the number obtained by reversing its digits. If its unit's and ten;s digit is x and y respectively write the linear equation representing the statement.
  2. 4. 1536 sq.m if each side of a rhombus is 40m and its longer diagonal is 48m, then find the area of rhombus.
  3. 5. True every integer is a rational number
  4. 6. 20° in a triangle ABC, if AB = AC and BC produces toD such that <ACD = 100°, then <A =
  5. 7. 1 write the value of (2+√3)(2-√3)
Down
  1. 1. True π is an irrational number
  2. 2. 4 rationalize 3√4*3√16
  3. 3. 2x = y-10 the cost of the ball pen is ₹5 less than half of the cost of a fountain pen. Write this statement as linear equation in two variables.
  4. 4. False the point (a,b) lies on y axis if b = 0
  5. 6. √5 [(625)^-1/2]-1/4