Sarah is designing a triangular pyramid made of all glass to go on top of a building. All of the faces of the pyramid have a height of 26 feet and a base of 30 feet.

Note: Figure is not drawn to scale.

How much glass is needed?
A.
4,680 sq ft
B.
1,560 sq ft
C.
780 sq ft
D.
3,120 sq ft

the answer is D

Step-by-step explanation:

times 26 by 30 then times the product by 4 since a trinaglar pyramid has four sides

Step-by-step explanation: That would mean that f(2) and f(4) both equal 3, and one-to-one ... the function defined by f(x)=2x + 2, and let g : R ! R be the function defined by g(x) = 1. 2 x 1. Then ... Use that f is an invertible function and that f-1. (1) = -2 f-1(2) = 3 f-1(3) = 2 f-1(4) = 5 f-1.