If angle V angle U and the length of one thumb is 2.3 inches, find the total length of both thumbs put together.

Assuming that Anita needs hollow right circular cones, we are solving for its lateral surface area, which is given by the formula πr√(h²+r²), where r is the radius and h is the height.
r = 6 ft / 2 = 3 ft

Solving for the lateral surface area of one cone:
LSA = (3.14) (3) [√(12²+3²)] = 116.52 sq ft.

Since she needs 10 cones:
10 * 116.52 sq. ft = 1,165.2 sq ft.

She will need 1,165.2 sq ft of material.