Question

18. Construct an angle of 60° using ruler and compass and bisect it
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19. Total surface area of a cube is 600 cm2. Find its side. X
20. Mid values of class intervals are 10. 15. 20. 25. Find the lower limit of first class interval.​

Answer 1

Step-by-step explanation:

8

Answer 2

Answer:

73.48469cm^2

Step-by-step explanation:

I know only Q.19

Area of a cube=600cm^3

Side ,, ,, ,, =3√600=73.48469cm^3

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