Section 2 of 3 Mathematics y1Question # 8Find the total surface area of cube if its volume is 125 m2 About the author Skylar
Answer: Step-by-step explanation: Let the side of a cube =a Volume of the cube = a 3 a 3 =125 a 3 =5 3 a=5 cm If two cubes are joined end to end it becomes cuboid. Dimensions of cuboid are Lengh =l=10 cm Breadth =b=5 cm height =h=5 cm Lateral surface Area = 2(l+b)h=2(10+5)5 =2×15×5=15059cm Total surface Area = 2(lb+bh+lh) =2(10×5+5×5+5×10) =2(50+25+50) =2(125) =250sq.cm Volume = lbh=10×5×5=250 cubic cm Reply
Answer:
Step-by-step explanation:
Let the side of a cube =a
Volume of the cube = a
3
a
3
=125
a
3
=5
3
a=5 cm
If two cubes are joined end to end it becomes cuboid.
Dimensions of cuboid are
Lengh =l=10 cm
Breadth =b=5 cm
height =h=5 cm
Lateral surface Area = 2(l+b)h=2(10+5)5
=2×15×5=15059cm
Total surface Area = 2(lb+bh+lh)
=2(10×5+5×5+5×10)
=2(50+25+50)
=2(125)
=250sq.cm
Volume = lbh=10×5×5=250 cubic cm