Find the total area for the regular pyramid. • 280 + 54^3 sq. units
• 18^91 + 54^3 sq. units
• 360 + 54^3 sq. units
• 360^3 sq. units

Step-by-step explanation:

Given is the hexagonal pyramid.

We know the radius of the base is same as its side.

Find the base area:

Given the height and radius, find the side of the lateral triangular faces:

Each of 6 triangles have sides 10, 10 and 6 units.

Find the area using heron's formula:

Total surface area:

Correct choice is B

v: l•w•h÷2.

v: 20•6•8 ÷2

v: 960÷2

v: 480

the answer is d

step-by-step explanation: