Can someone me with the volumes of pyramids for a brainless and points

Step-by-step explanation:

Volume of a pyramid = (l×b×h)/3

V = 128cm^3,

l = 8cm

b = 8cm (/because is a square base)

Substituting this values

128 = (8×8×h)/3

Cross multiply

128×3 = 64h

384 = 64h

Dividing through by 64

h = 384/64

h = 6cm

Height is 6cm

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