Question

P : l =5 : 8, jika luas bangun itu 3.240 cm², a. Berapa cm ukuran p dan l masing masing? b. Brp cm keliling nya? tolong ya caranya pls

Answer 1

Verified answer

P= 5X
l= 8X

p×l= 3.240
5X × 8X = 3.240
40X² = 3.240
X²= 3.240÷40
X²= 81
X= √81
X= 9 cm

a.
p= 5X
=> 5×9= 45 cm

l= 8X
=> 8×9= 72 cm

b.
keliling= 2(p+l)
= 2(45+72)
= 2×117
= 234 cm