Area & Surface Area:Question 10 What is the lateral surface area of the triangular pyramid shown?
Select one:
46.8 square inches
Help please

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

: )

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using pemdas, (order of operations) you'll see the answer is 24.