Question

If 3A =
1 2 2
2. 1-2
- 2 2 - 1 then show that A^-1=A'​

Answer 1

Answer:

Check the answer

Step-by-step explanation:

(i) Radius of sphere, r = 7 cm

Using, Volume of sphere = (4/3) πr3

= (4/3)×(22/7)×73

= 4312/3

Hence, volume of the sphere is 4312/3 cm3

(ii) Radius of sphere, r = 0.63 m

Using, volume of sphere = (4/3) πr3

= (4/3)×(22/7)×0.633

= 1.0478

Hence, volume of the sphere is 1.05 m3 (approx