Question

Find the lateral area of the square pyramid shown, to the nearest whole number.
A. 7294 yd2

B. 3192 yd2

C. 4758 yd2

D. 3647 yd2

Answer 1

x is the height of one of the lateral faces
can you calculate x?

Answer 2

i got 31.6702

Answer 3

no - I'm afraid not
x = sqrt(38^2 + 21^2) = sqrt1885 = 43.417

Answer 4

im really bad at math

Answer 5

its pythagoras' theorem
- check out the triangle x must be longer than 38 - right?

Answer 6

ohh i see what i did wrong

Answer 7

x^2 = 38^2 + 21^2

Answer 8

good
now the area of one lateral side = 43.417 * 21 ( height * half base)

multiply this by 4 gives you total lateral area of the pyramid

Answer 9

soo D?

Answer 10

yes

Answer 11

thanks