What's the length of side b in the figure below?

Option 'D' is correct.

Step-by-step explanation:

Since we have given that

There is a right angled triangle, in which,

Perpendicular = 7 cm

Hypotenuse = 13 cm

Base = b cm

As we know the formula for "Pythagorus theorem":

Hence, Option 'D' is correct.

i used to know how to do this in 7th but i forget easily

step-by-step explanation:

(1,4) is on graph of f(x)

f(1) = 4

so 1/4 f(x)

1/4 f(1)

1/4. ×4

1

so point for function 1/4. f(x) is (1,1)