The surface area of a regular triangular pyramid is 197.1 square meter. The slant height is 12. The area of the base is 35.1 square meters. The base length is 9 meters. What is the height of the triangular base?

Here's link to the

cutt.ly/zxt1ipy

2

Step-by-step explanation:

(12x9/2)3=162

197.1-162=35.1

(35.1x2/2)=35.1

h = 7.8

Step-by-step explanation:

A = 1/2*b*h

35.1 = 1/2*9*h . . . . dimensions apply to the base only

35.1*2/9 = h = 7.8 . . . m is the height of the triangular base.

Check:

The base is an equilateral triangle, so the height will be (9 m)*sin(60°) = 7.8 m.

For the question asked, the surface area and slant height are irrelevant.

i think it's either c or d

step-by-step explanation: the entire question is extremely odd. 04 obviously refers to the interest rate. honestly i will say the answer is c. because the (2 x 12) part would mean it's compounded semiannually. i'll say choose c.

b is 38 degrees.

a is 52 degrees.

this is because if b is 38 and a is 14 degrees more than b than 38+14=52 and 52+38=90 degrees. hope this .