Question

Q4. If side of a cube is 6.5cm,then its T.S.A is---in mm²​

Answer 1

Answer:

Let rcm be the radius of the sphere whose surface area=314cm2

⇒ 4πr2=314

⇒ 4×3.14×r2=314

⇒ r2=4×3.14314=4×314314

⇒ r2=25

⇒ r=5cm

Answer 2

Answer:

25350 mm²

Step-by-step explanation:

Side of the cube = 6.5 cm = 65 mm

Total surface of cube = 6× side²

= 6 × 65× 65 mm²

= 25350 mm²