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7. The volume of a cuboid is 3600 cm3 and its height is 12 cm. The cross-section isawhose length and breadth are in the ratio 4:3. Find the perimeter of the |
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Answer» Let l =4x B=3x h =12cmV = L×B×H=3600 or 4x×3x×12 =3600 12x²×12 =3600 x² = 3600 \12×12 or x² =300\12or x² =100\4 =25or x = 5then L =4×5=20 and B=3×5=15L=20 B =15 ans. |
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