Alas sebuah limas berbentuk belah ketupat dgn panjang sisi 29 cm dan panjang salah satu diagonalnya 40 cm. Jika tingginya 30 cm, maka volumenya adalah.... Tolong bgt yaa
andijayawidjaya
29 kwadrat - 20 kwadrat = 841 - 400 = 441 panjang 1/2 diagonal satunya = akar 441 = 21 cm V = 1/2 x [ L alas x t ] V = 1/2 x [ 1/2 x d1 x d2 x t ] V = 1/2 x [ 1/2 x 40 x 42 x 30 ] V = 1/2 x [ 1/2 x 50400 ] V = 1/2 x 25200 V = 12600 cm kubik
panjang 1/2 diagonal satunya = akar 441 = 21 cm
V = 1/2 x [ L alas x t ]
V = 1/2 x [ 1/2 x d1 x d2 x t ]
V = 1/2 x [ 1/2 x 40 x 42 x 30 ]
V = 1/2 x [ 1/2 x 50400 ]
V = 1/2 x 25200
V = 12600 cm kubik