27-5 = 22
22/11 = 11
there are 11 boys at the party
expression = b+5
Side a = 10.98991
Side b = 11.69522
Side c = 4
Angle ∠A = 70° = 1.22173 rad = 7/18π
Angle ∠B = 90° = 1.5708 rad = π/2
Angle ∠C = 20° = 0.34907 rad = π/9
Answer:
wrong as his calculation was incorrect at initial level itself when he found the result of the division
Step-by-step explanation:
Andre said
3 ÷ 



but andre calculated it as



Hence his calculation was incorrect at initial level itself
The answer is 90
20%of 99=18