Question

Diameter alas suatu kerucut 10 cm .jika panjang garis pelukisnya 13cm hitunglah
a.tinggi kerucut
b.volume kerucut

Answer 1

R = 10/2 = 5 cm

t = √(13²-5²)= 12 cm

V = 1/3 . 3,14 . 5² . 12 = 314 cm³

Answer 2

D = 10 cm
r = 5 cm
s = 13 cm

t² = s² - r²
   = 13² - 5²
   = 169 - 25
   = 144
t = √144
  = 12 cm

V = 1/3 ×π × r² × t
   = 1/3 × 3,14 × 5² × 12 cm³
   = 314 cm³