Question

PLZ SOLVE..
1) find volume of a cube whose side is 8cm.
2) multiply m²n² + m²n+8 by 6 mn.
3) if 56 men can do a piece of work in 42 days how many men will do it in 14 days.
4)the area of a rhombus is 216 cm² square and one of the diagonal is 18 cm find the other.
5) find find the value of a, b and c
A B
× 3
C A B
6) simplify : (7m - 8n)² + (7m + 8n)²
7) RomeRome is in the form of a cuboid of measure 60m× 40m× 30m. how many small cuboidal boxes can be stored in it in the volume of one box is 0.8m³.
8) in hostel or 50 girls their food provision for water days if 30 More join the hostel how long will this provision last​

Answer 1

Answer:

Step-by-step explanation:

1) 8^3= 512 cm^3

2) (m^2n^2+m^2n+8)6mn

= 6m^3n^3+ 6m^3n^2+48mn

3) 56 men can do a work in 42 days

Men who will do the work in 14 days are

(56/42)*14= 56/3=18.6=19 (approx)

4) (1/2)*18*d2= 216cm^2

9d2=216cm^2

d2= 216/9= 24 cm

5) Please write it more clearly pls

6) (7m-8n)^2+(7m+8n)^2

= 49m^2-112mn+64n^2+ 49m^2+112mn+64n^2

98m^2+128n^2

7) lbh= 60*40*30= 72000m^3

72000/0.8= 90000 boxes.

8) pls write the q more clearly

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