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Answers
See in the attachment.
Explanation:
Rules for Negative into Affirmative and vice versa:
1. Exclude the not , and change the adjective or verb(when adjective is missing) into it's opposite.
e.g He did not live long.
He lived short.
2. None but will change into only/all/everyone according to sentence.
e.g None but Ram was present there.
Only Ram was present there.
e.g There is none but wishes to be happy.
There is all wishes to be happy.
3. As soon as will change into no sooner did and than will be used inthe place of comma (,)
e.g As soon as I arrived, the noise ceased.
No sooner did I arrive than the noise ceased.
4. Degree Change can also take place.
e.g He is as clever as you.
You are not more clever than him.
Answer:
90 cm²
Explanation:
Given:
3 Cubes of volume 27 cm³ are joined end to end.
To find:
Total Surface Area (T.S.A)
Solution:
\because∵ Volume of cube = 27 cm³
\therefore \textsf{Side of cube} = \sqrt[3]{27} \:\:\:\:\textsf{cm}$^{3}$ \implies 3 \:\:\: \text{cm}
So the side of each cube is 3 cm.
\because∵ All the cubes are joined end to end. (See In Attachment)
\therefore∴ Length(l) of new cuboid = (3+3+3)
= 9 cm
Breadth(b) = 3 cm
Height(h) = 3 cm
So, T.S.A = 2(lb+bh+lh)
= 2{(9×3)+(3×3)+(3×3)}
= 2(27 + 9 + 9) cm²
= 2(45) cm²
= 90 cm²
Additional Information:
Cube : Cube is a 3D shape which contains equal length, breadth and height. It have 8 vertex, 6 face and 12 edges.
e.g Cube and Dice etc.
Formula Related to Cube
Diagonal of cube = a√3 unit
T.S.A """"""""" = 6a² unit²
Volume """""""" = a³ unit³
[Where a is length of any equal side]
Cuboid : Cuboid is also a 3D shape which have similar properties like cube. But it's length breadth and height are not equal.
Formula Related to Cuboid.
Volume of Cuboid = l × b × h unit³
T.S.A of Cuboid= 2(lb+bh+lh) unit²
\textsf{Diagonal of Cuboid} = \sqrt{l^2+b^2+h^2} \:\:\:\:\: \text{unit}Diagonal of Cuboid=
l
2
+b
2
+h
2
unit
[Where l , b and h are length, breadth and height of any Cuboid]