The whole surface area of a rectangular block is 8788 cm^2. If the length , breadth and height are in the ratio 4:3:2 , find its height. *
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Answer:
13cm.
Step-by-step explanation:
total surface area=2(lb+bh+hl)
8788cm² =2(4a×3a+3a×2a+2a×4a)
8788cm² =2×(12a²+6a²+8a²)
8788cm² =2×26a²
8788cm² =52a²
a² =8788cm²/52
a. =√169cm²
a. =13cm.
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