Question

Tolong Dijawab Sekarang yah
Soalnya:Hitung Luas Dan Kelilingnya
1. 14cm dan 8cm
2. 28cm dan 3cm
3. 16cm dan 12cm
4. 100cm,8cm,dan 12cm
5. 25cm,7cm,4cm,dan 20cm
Please Sekarang yah Sama Rumusnya

Answer 1

Verified answer

1.
L = p x l
L = 14 x 8
L = 112 cm^2

K = 2 x (p+l)
K = 2 x (14+8)
K = 2 x (22)
K = 44 cm

2.
L = 28 x 3
L = 84 cm^2

K = 2 x (28+3)
K = 2 x (31)
K = 62 cm

3. segitiga (rumus pitagoras)
alas = 16^2 - 12^2
= 256 - 144
= akar 112
= akar 16 x 7
= 4 akar 7
L = 1/2 alas x tinggi
L = 1/2 x 4 akar 7 x 12
L = 24 akar 7 cm^2

K = 16 + 12 + 4 akar 7
K = 28 + 4 akar 7


4.
L = 1/2 alas x tinggi
L = 1/2 x 12 x 8
L = 48 cm^2

K = 12 + 8 + 10
K = 30 cm