Question

Sebuah persegi P,Q,R,S panjang P,Q = 4×+2cm dan Q,R =3+9cm. Hitunglah :
a. Nilai x,
b. Keliling,
c. Luas

Answer 1

a. 4x + 2 = 3x +9

4x -3x = 9 - 2

x = 7

4x + 2 = 4.7 x 2. 3.7 + 9

= 30 30

b. K = 4 x 30 = 120 cm

c. L = 30 x 30 = 900 cm²