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Cubes And Cube Roots

Question

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Which of the following are perfect cubes?

1. 400 2. 3375 3. 8000 4. 15625

5. 9000 6. 6859 7. 2025 8. 10648

Solution

Some More Questions From Cubes and Cube Roots Chapter

Find the smallest number by which each of the following numbers must be multiplied to obtain a perfect cube. (i) 243 (ii) 256 (iii) 72 (iv) 675 (v) 100

Show that —1728 is a perfect cube. Also, find the number whose cube is – 1728.

Is 216 a perfect cube? What is the number whose cube is 216?

Parikshit makes a cuboid of plasticine of sides 5 cm, 2 cm, 5 cm. How many such cuboids will he need to form a cube?

Find the cube root of 1728.

Fint the cube root of 27000 by prime factorisation.

State true or false: for any integer m, m² < m³. Why?

What is the smallest number by which 288 must be multiplied so that the product is a perfect cube?

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