
Luas dan Volume Limas
Presentation
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
Ilham Ilham
Used 9+ times
FREE Resource
11 Slides • 0 Questions
1
2
a. Limas Segitiga
Mempunyai 4 titik sudut (A,B,C, dan D)
Mempunyai 4 bidang sisi, yaitu ABC, ABD, BCD, dan ACD.
Mempunyai 6 rusuk.
OT disebut garis tinggi.
Some text here about the topic of discussion.
Sifat-Sifat Limas
3
Mempunyai 5 titik sudut.
Mempunyai 5 bidang sisi.
Mempunyai 8 titik rusuk
Mempunyai 2 bidang diagonal sisi.
Mempunyai garis tinggi t
Some text here about the topic of discussion.
b. Limas Segiempat
4
Some text here about the topic of discussion.
Luas Permukaan Limas
5
Luas Permukaan Limas
Luas Permukaan Limas =
= Luas alas + Jumlah luas bidang tegak
Some text here about the topic of discussion
6
Contoh :
Alas limas T.ABCD pada gambar di samping berbentuk persegi dengan panjang sisi 12 cm. TP adalah garis tinggi pada segitiga ABC. Jika tinggi limas tersebut 8 cm, hitunglah :
a. panjang TP
b. luas permukaan limas
Some text here about the topic of discussion
7
a. OP = 1/2 AB = 6 cm.
ΔTOP siku-siku di O, maka :
TP2 = TO2 + OP2 (teorema Pythagoras)
TP2 = 82 + 62
TP2 = 64 + 36
TP2 = 100
TP = 10
Jadi, panjang TP adalah 10 cm.
8
b. Luas permukaan limas
= luas alas + 4 x luas ΔBCT
= (s x s) + [ 4 x ( 1/2 x BC x TP) ]
= (12 x 12) + [ 4 x (1/2 x 12 x 10) ]
= 144 + 240
= 384
Jadi, luas permukaan limas tersebut adalah 384 cm2
Some text here about the topic of discussion.
9
Volume Limas
Volume Limas = 1/3 x luas alas x tinggi
Some text here about the topic of discussion
10
Contoh soal:
Alas sebuah limas berbentuk segitiga siku-siku dengan panjang sisi 10 cm, 26 cm, dan 24 cm. Hitunglah tinggi limas tersebut jika volumenya 1.080 cm3 !
Subject | Subject
Some text here about the topic of discussion
11
Jawab :
V = 1/3 x Luas alas x tinggi
1.080 = 1/3 x ( 1/2 x alas segitiga x tinggi segitiga) x tinggi prisma
1.080 = 1/3 x (1/2 x 24 x 10 ) x t
1.080 = 1/3 x 120 x t
1.080 = 40t
t = 1.080/40
t = 27
jadi, tinggi limas tersebut adalah 27 cm.
Subject | Subject
Some text here about the topic of discussion
Show answer
Auto Play
Slide 1 / 11
SLIDE
Similar Resources on Wayground
10 questions
The Discriminant
Presentation
•
9th Grade
10 questions
Parallel and perpendicular slope
Presentation
•
9th Grade
9 questions
Lesson 7.4: Find Distance in Between Points
Presentation
•
8th Grade
9 questions
Unit 3 STAAR Review
Presentation
•
8th Grade
8 questions
Distribution/Combine Like Terms
Presentation
•
7th Grade
9 questions
Graphing Functions
Presentation
•
8th - 9th Grade
11 questions
Multi-step Equations, Combining Like Terms
Presentation
•
8th Grade
9 questions
ESTIMATION YEAR 8
Presentation
•
8th Grade
Popular Resources on Wayground
24 questions
PBIS-HGMS Day 10
Quiz
•
6th - 8th Grade
10 questions
HCS SCI 03 Summer School Review 3
Quiz
•
3rd Grade
11 questions
Home Scope
Quiz
•
7th - 8th Grade
15 questions
HCS SCI 05 Summer School Assessment 3 Review
Quiz
•
5th Grade
35 questions
Lufkin Road Middle School Student Handbook & Policies Assessment
Quiz
•
7th Grade
18 questions
Geo 11.3 Area of Circles and Sectors
Quiz
•
9th - 11th Grade