\(Area \;of\; parallelogram = Base \times Height\)
(a)\( Height= 4 \;cm\)
\(Base = 7\; cm\)
\(Area\; of \;parallelogram = 7 \times 4 = 28 \;cm^2\)
(b) \(Height= 3 \;cm\)
\(Base = 5 \;cm\)
\(Area \;of \;parallelogram = 5 \times 3 = 15 \;cm^2\)
(c) \(Height= 3.5 \;cm\)
\(Base = 2.5 \;cm\)
\(Area\; of\; parallelogram = 2.5 \times 3.5 = 8.75 \;cm^2\)
(d) \(Height= 4.8 \;cm\)
\(Base = 5 \;cm\)
\(Area\; of\; parallelogram = 5 \times 4.8 = 24 \;cm^2\)
(e) \(Height= 4.4 \;cm\)
\(Base = 2 \;cm\)
\(Area\; of\; parallelogram = 2 \times 4.4 = 8.8 \;cm^2\)
Match the items given in Column I with one or more items of Column II.
Column I | Column II |
(a) A plane mirror | (i) Used as a magnifying glass. |
(b) A convex mirror | (ii) Can form image of objects spread over a large area. |
(c) A convex lens | (iii) Used by dentists to see enlarged image of teeth. |
(d) A concave mirror | (iv) The image is always inverted and magnified. |
(e) A concave lens | (v) The image is erect and of the same size as the object. |
- | (vi) The image is erect and smaller in size than the object. |