Calculate the total surface area of this hemisphere. Give your answer to 1 decimal place (has a radius of 4cm)

150.9 cm^2

Step-by-step explanation:

Here. we want to calculate the surface area value of a hemisphere with a radius of 4 cm

To calculate this, we use the equation for the area

This is;

3 * pi * r^2

= 3 * 22/7 * 4^2 = 150.9 cm^2

x² + 3x + 7 = 0       [ax² + bx + c]

a = 1

b = 3

c = 7

quadratic formula:

    (+/- is this ±)

plug in the numbers into the variables

your answer is a