A rectangular tank is 25 m long, 1 200 cm wide and 6 000 mm deep. The

1.	A rectangular tank is 25 m long, 1 200 cm wide and 6 000 mm deep. The tank is open at the top. Thecost of plastering the inside of its walls and bottom (floor) at R26 per square metre is[1] R19 344,00.[2] R46 800,00.[3] R7 800,00.[4] R13 572,00.
Answer» Answer: WIDTH = 1200×10 = 12000mm length = 25×1000 = 25000mm height = 6000mm area of inner WALLS and FLOOR = 2(lb+bh+lh)-lb = 2(bh+lh)+lb = 2(12000×6000+25000×6000)+25000×12000 = 2(72000000+150000000)+300000000 = 2(222000000)+300000000 = 444000000+300000000 = 744000000mm = 74400000cm = 744000m cost = 26×744000 = ₹19244000 option(a) ans. CHECK IT OUT!!

A rectangular tank is 25 m long, 1 200 cm wide and 6 000 mm deep. The tank is open at the top. Thecost of plastering the inside of its walls and bottom (floor) at R26 per square metre is[1] R19 344,00.[2] R46 800,00.[3] R7 800,00.[4] R13 572,00.

Answer»

Answer:

WIDTH = 1200×10 = 12000mm

length = 25×1000 = 25000mm

height = 6000mm

area of inner WALLS and FLOOR = 2(lb+bh+lh)-lb

= 2(bh+lh)+lb

= 2(12000×6000+25000×6000)+25000×12000

= 2(72000000+150000000)+300000000

= 2(222000000)+300000000

= 444000000+300000000

= 744000000mm

= 74400000cm

= 744000m

cost = 26×744000

= ₹19244000

option(a)

ans.

CHECK IT OUT!!

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A rectangular tank is 25 m long, 1 200 cm wide and 6 000 mm deep. The tank is open at the top. Thecost of plastering the inside of its walls and bottom (floor) at R26 per square metre is[1] R19 344,00.[2] R46 800,00.[3] R7 800,00.[4] R13 572,00.

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