Given is square root of a negative real number, i.e. 
When we find square root of positive real numbers, we get Real answers.
But when we find square root of negative real numbers, we get Imaginary answers. To solve them, we can split the given negative number into product of -1 and the number itself but with positive sign. e.g. -4 = -1 x 4.
For square root of -1, we use english letter 'i' called Imaginary unit i.e. 
Now we can use -0.25 = -1 x 0.25
Hence, "0.5i" is the final answer.
Answer:
solution given:
similar cylinders ratio 1:3
let the ratio be 1x and 3x respectively:
according to the question:
x/3x=volume of (smaller cylinder/big cylinder)
Volume of big Cylinder=67cm³×3=201cm3
201cm³ is your answer
Answer:
60°
Step-by-step explanation:
360 - ( 80+115+10) = 60°
Answer:
n = -6
Step-by-step explanation:
D. 60
when subtracting a negative from a positive use KCC
K eep
C hange
C hange
you keep the first number change the subtraction to a addition and make the negative a positive
35-(-25)
=======
35+(-25)
=======
35+25
=======
60
