Question

Tentukan luas lingkaran yang berjari-jari
a. 15 cm c. 30 cm
b. 17,5 cm d. 50 cm

Answer 1

A)
L = π.r²
L = 3,14.15²
L = 3,14.225
L = 706,5 Cm²

b)
L = π.r²
L = 3,14.17,5²
L = 3,14.306,25
L = 961,625 Cm²

c)
L = π.r²
L = 3,14.30²
L = 3,14.900
L = 2826 Cm²

d)
L = π.r²
L = 3,14.50²
L = 3,14.2500
L = 7850 Cm²