Shalini must cut out circles of diameter 1 1/4 CM from an aluminium strip of dimension 8 3/4 CM by 1 1/4 CM. How many full circles can shalini make
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Answered by
1
Answer:
ANSWER
Given d=1
4
1
=
4
5
⇒r=
8
5
Cm.
Area of circle =πr
2
=π(
8
5
)
2
=
64
25π
Cm
2
.
Area of strip =(8
4
3
)×(1
4
1
)=
4
35
×
4
5
=
16
175
Cm
2
=10.9375Cm
2
.
diameter of circle = breadth of strip.
of Circles =
diameterofcircle
Lengthofstrip
=
(5/4)
(35/4)
=7
Total area of circles =7×
64
25π
=8.590cm
2
.
Area wasted = strip area - total area of circles
=2.343cm
2
Answered by
1
Answer:
2
Step-by-step explanation:
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