Question

Mohon jawabannya yaa(?)

Answer 1

Keliling alas = 4s = 72 cm
s = 72 : 4
s = 18 cm

tinggi limas
TE² = TP² - EP² (dimana EP = 1/2 s = 1/2 x 18 = 9 cm)
TE² = 15² - 9²
TE² = 225 - 81
TE² = 144
TE = √144
TE = 12 cm

volume limas = 1/3 x Luas alas x tinggi
= 1/3 x 18² x 12
= 1296 cm³