The total area of a circle and a rectangle is equal to 1166 square cm.The diameter of the circle is 28 cm.What is the sum of the circumference of the circle and the perimeter of the rectangle if the length of the rectangle is 25 cm
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Answered by
3
given sum of areas =1166.
d of circle =28cm=14cm radius
area=22÷7×14×14=44×14=616cm^2
remaining=1166-616=550cm^2.
l=25cm,breadth we can take as m.
area of rectangle=l×b
=25×m =500.
m
=
500÷25=20cm.
perimeter of circle=22÷7×2×14=88cm
perimeter of rectangle=2{25+20}=2×45=90
so,sum=90+88=178cm
d of circle =28cm=14cm radius
area=22÷7×14×14=44×14=616cm^2
remaining=1166-616=550cm^2.
l=25cm,breadth we can take as m.
area of rectangle=l×b
=25×m =500.
m
=
500÷25=20cm.
perimeter of circle=22÷7×2×14=88cm
perimeter of rectangle=2{25+20}=2×45=90
so,sum=90+88=178cm
drpoonamdel:
Its wrong.
i am sorry for 550 i kept 500
Answered by
4
Answer:
182 cm
Step-by-step explanation:
given sum of areas =1166.
d of circle = 28 cm = 14 cm radius
area=22÷7×14×14=44×14=616 cm^2
remaining=1166-616=550 cm^2.
l=25 cm,breadth we can take as m.
area of rectangle=l×b
=25×m =550
m =
550/25 = 22 cm
circumference of circle=22÷7×2×14=88 cm
perimeter of rectangle=2{25+22}=2×47=94
so,sum=94+88=182 cm
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