Question

di jawab pake cara semua ya ​

Answer 1

7.

L = ½ x a x t

48 = ½ x a x 12 cm

48 = a x 6 cm

a = 48 cm ÷ 6 cm

a = 8 cm [ C. ]

____

8.

L = ½ x a x t

L = ½ x 67 cm x 54 cm

L = 67 cm x 27 cm

L = 1.809 cm² [ C. ]

____

9.

Lebar

L = p x l

180 = 15 cm x l

l = 180 cm ÷ 15 cm

l = 12 cm

Keliling

K = 2 ( p + l )

K = 2 ( 15 cm + 12 cm )

K = 2 ( 27 cm )

K = 54 cm [ C. ]

____

10.

L gedung

L = p x l

L = 20 m x 12 m

L = 2.000 cm x 1.200 cm

L = 2.400.000 cm

L ubin

L = 40 cm x 40 cm

L = 1.600 cm

Banyak Ubin

2.400.000 cm ÷ 1.600 = 1.500 buah [ C. ]