Apyramid has all sides that are equilateral triangles. each triangle has side lengths of 9 centimeters. if the surface area of the pyramid is 140.4 square centimeters, what is the slant height of the pyramid?

answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)

its kind of blurry. can you put a clearer pic?

step-by-step explanation: