Can someonewill give brainliest. i need the answer !

6 lights

Step-by-step explanation:

To find the answer, divide 7.5 by 1.45

7.5/1.45= 5.2

He will need at least 6 lights.

Hope this helps!

b

step-by-step explanation:

the word superfluous means unnecessary

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2