Question

Find the surface area of the regular pyramid to the nearest whole number. The figure is not drawn to scale.

https://lh3.googleusercontent.com/oXVmjcJwMvjk0cIEvowEgKzV556-JwvnSKoUY85crsSWXMPM4advBWRcGnxwaHd01i2R8VM=s96

a. 862m sq.
b. 540m sq.
c. 1125m sq.
d. 647m sq.

Answer 1

All you need is [Base Area] + [Lateral Area], so solve for the base and each side, then add them all together to get your surface area. :)

Answer 2

what would those formulas be?

Answer 3

oh and how do expand 7.5√3?

Answer 4

If that picture is a hexagon for the base, then you need \(a = \frac{3\sqrt{3}}{2}*a^2\) and \(\frac{1}{2}b*h\) for each side.

You shouldn't need to expand it.

Answer 5

You use that in your area equation of \(A = \frac{1}{2}*a*h\), where 'h' is your \(7.5\sqrt{3}\) and a is your edge length.