Question

plzz give me answer fastly

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Question 10:-
sin(90-angle) = cos (angle)
sin square 5 = cos square 85
by displacing all of them
it remains to be sin square 45 + cos square 45
i.e 1/√2+1/√2 = 2/√2 = √2....

Question 11:-
let the side of one cube be 'a' and of other cube be 'b'
a^3/b^3 = 8:64
a/b = 2/4 = 1/2
2a = b
surface area of 1st cube = 6*a^2
surface area of 2nd cube = 6*b^2
= 6*2a^2
=6*4*a^2
= 24a^2
ratio = 6:24
= 1:4
please mark it as the brainliest...