Question

Please Solve this in all Steps

Answer 1

11) a/c to qu question,
PA = PB
use distance formula,
√{x -(a+b)}^2+{y-(b-a)}^2 =√{x-(a-b)}^2+{y-(a+b)}^2

take square both side ,
{x-(a+b)}^2 +{y-(b-a)}^2={x-(a-b)}^2+{y-(a+b)}^2

x^2+(a+b)^2-2x(a+b) +y^2+(b-a)^2-2y(b-a)=x^2+(a-b)^2-2x(a-b)+y^2+(a+b)^2-2y(a+b)

-2x(a+b)-2y(b-a)= -2x(a-b)-2y(a+b)

2x{ -a-b+a-b } =2y{-a-b+b-a}

bx = ay
hence proved


12) volume of cylindrical tank = volume of conical tank
πr^2h/3 =πR^2H
(5)^2(24/3) = (10)^2H
25 × 8 = 100 H
H =200/100 = 2 cm