Alas sebuah prisma berbentuk belah ketupat dengan panjang sisi 13 cm dan panjang salah satu diagonal 10 cm. Jika tinggi prisma 15 cm, volumenya adalah?
dnnyz07
Diagonal 2 = √(13^2 - (10/2)^2 ) x 2 = √169-25 x2 = √144 x 2 = 12 x 2 = 24 cm Luas alas = 24 x 10 / 2 = 120 cm^2 V = La.t = 120 x 15 = 1.800 cm kubik
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muhammadrofiq66
Pajang diagonal 2 = √13² - 5² = √169 -25 = √144 = 12cm x 2 = 24 cm
L alas = d1 x d2 /2 = 10 x 24 /2 = 120 cm²
Maka VOlume = L alas x tinggi prisma = 120 x 15 = 1800 cm³
= √169-25 x2
= √144 x 2
= 12 x 2
= 24 cm
Luas alas = 24 x 10 / 2
= 120 cm^2
V = La.t
= 120 x 15
= 1.800 cm kubik
= √169 -25
= √144
= 12cm x 2
= 24 cm
L alas = d1 x d2 /2
= 10 x 24 /2
= 120 cm²
Maka VOlume = L alas x tinggi prisma
= 120 x 15
= 1800 cm³