Question

please answer it
tomorrow my exam​

Answer 1

Answer:

Sorry but the question you asked in maths section is about chemistry...

Actually hydroxides of only following metals are soluble in water....

LiOH, NaOH, KOH, RbOH, CsOH, Ca(OH)2,Sr(OH)2,Ba(OH)2......

Rest metal hydroxides are insoluble in water.... Thanks.....

Answer 2

Answer:

S= 150/2 = 75

area=

$\sqrt{75(75 - 35)(75 - 54)(75 - 61)}$

=

$\sqrt{75 \times 40 \times 21 \times 14 }$

=

$\sqrt{5 \times 5 \times 3 \times 2 \times 2 \times 2 \times 5 \times 7 \times 3 \times 7 \times 2}$

=

$5 \times 3 \times 2 \times 2 \times 7 \times \sqrt{5}$

=

$420 \sqrt{5}$

$h \: = 2 \times 420 \sqrt{5} \: \div 35$

$h \: = 24 \sqrt{5}$