yaficanceroyddmf
3. luas 1 = p x l = 19 x 9 = 171 luas 2 = p x l = 19 x 5 = 95 171 + 95 = 266 cm² 4. volume prisma = luas alas x t = 1/2 x a x t x t = 1/2 x 10 x 8 x 20 = 800 cm³ 5. luas trapesium = 1/2 x (a+b) x t = 1/2 x (15 + 25) x 10 = 200 dm² 6. luas lingkaran = phi x r x r 154 = 22/7 x r² 154:22/7 = r² √49 = r² 7 = r volume tabung = phi x r x r x t 3080 = 22/7 x 7 x 7 x t 3080:22/7:49 = t 20 = t
luas 2 = p x l = 19 x 5 = 95
171 + 95 = 266 cm²
4. volume prisma = luas alas x t
= 1/2 x a x t x t
= 1/2 x 10 x 8 x 20
= 800 cm³
5. luas trapesium = 1/2 x (a+b) x t
= 1/2 x (15 + 25) x 10
= 200 dm²
6. luas lingkaran = phi x r x r
154 = 22/7 x r²
154:22/7 = r²
√49 = r²
7 = r
volume tabung = phi x r x r x t
3080 = 22/7 x 7 x 7 x t
3080:22/7:49 = t
20 = t