Q. 3. The shape of a garden is
rectangular in the middle and semicircular at
the ends as shown in the diagram. Find the
area and the perimeter of this garden. [Length
of rectangle is 20 – (3.5 +3.5) metres).
Please answer this as in its solution I am getting problem while finding area of semicircles the number 1/2 which we should take is missing is n reference book please help
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Answered by
1
Answer:
48 mtr
Step-by-step explanation:
Total area of the garden = Area of the rectangular portion + The sum of the areas of the pair of semi-circles
=l.b+2×
2
1
πr
2
=(13×7)m
2
+(
2×
2
1
×
7
22
×3.5×3.5
)m
2
=(91+38.5)m
2
=129.5m
2
.
Perimeter of the garden =2× length of rectangular portion + circumference of the circle
=(
2×13+2×
7
22
×3.5
)m
=(26+22)m=48m
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