Question

32.5 X 4.80)
ishing the
le
A door is 2.6 m by 1.1 m. Find the cost of painting both
ind the cost of painting both sides of the door at the rate of 20 per
square metre.
A farmer's rectangular plot measures 400 m by 225 m. How many square metres
should he buy more to make the area of his field equal to 10 hectare?
11. A man owns a square plot measuring 400 m x 400 m. He wants to keep an area of 9 hectares
with him and sell the remaining plot. How much money will he get if he sells the remaining
plot at the rate of 900 per square metre?
YThe area of four walls of a room is 144 m2. If the length of the room is thrice is breadth and the
height is 3 m, find the area of the floor.
V13. The area of the square is 18050 m2. Find the length of the diagonal.
ITA. A room is 9.5 m long, 7.5 m broad and 2.5 m high. It has one door of dimensions 2 mx 3 m and
two windows each of dimensions 3.5 x 2 m. Find the cost of painting the four walls at 5.60
per square metre.
e, how
area if
Area uitau
Whether it is for utility or for decorative purpose we often come across paths in and around or in the
centre of rectangular parks. The formulae that we have studied can help us to find their areas.
SOME SOLVED EXAMPLES
52 m
25m
Example 1: A 5 m wide path runs along the
inside of a rectangular field whose length and
breadth are 80 m and 52 m respectively. Find
the cost of cementing this path at the rate of
8.25 per sq metre.
Solution: Let ABCD represents the field and the
80 m
Fig. 14.3
The dimensions of the inner rectangle EFC
1
lod nortinn.
ac follows:the area of four walls of room is 144 metre square if the length of the room is 3 is breadth and the height is 3 metre find the area of the floor ​

Answer 1

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