Matematika Tolong dibantu ya.......​

kennylabadieulv – June 08, 2023

Tolong dibantu ya.......​

DIK :

1. V = 384 CM³
2. T = 8 CM

DIT :

A) LA. LIMAS !

=> LA = S × V/T

= 3 × 384 CM/8

= 1.152/8

= 144/1

= 144 CM

B) P.R LIMAS !

=> P.R = √LA

P.R = √144

P.R = √12²

P.R = 12 CM

C) P. TP !

TP = √T² + ( R ÷ 2 )²

= √8² + ( 12 ÷ 2 )²

= √(8.8) + 6²

= √64 + ( 6.6 )

= √64 + 36

= √100

= √10²

= 10 CM

D) L. TBC !

L = R × 10 ÷ 2

= 12 CM × 10 ÷ 2

= 12 CM × 5

= 60 CM

E) L.P !

L.P = 4 × L∆ + LA

= 4 × 60 CM + 144 CM

= 240 CM + 144 CM

= 384 CM²

Penjelasan dengan langkah-langkah:

V = s² x t/3

a. Luas alas = (3 x 384)/8

= 1.152/8

= 144 cm²

b. s = √144

s = 12 cm

c. TP = √(8² + (12/2)²)

TP = √(64+36)

TP = √100

TP = 10 cm

d. Luas ∆ = 12 x 10/2 = 60 cm²

e. Lp = 4 x 60 + 144

Lp = 384 cm²

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