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Answers
(a) Area of parallelogram=h×b=14×5=70cm^2
(b) Area of rhombus=h×b
168 = h×21
168/21=h=8cm
(c) Circumference of circle=2πr=44cm
2r=44×7/22
2r=d=14cm
(d) Circumference of the circle =2πr=132
2r=132×7/22
r=21cm
area of the circle =πr^2=22/7×21×21=22×21×3
=1386cm^2
(e) area of rhombus=h×b=8×8=64cm^2
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Answer:
(a) Area of parallelogram=h×b=14×5=70cm^2
(b) Area of rhombus=h×b
168 = h×21
168/21=h=8cm
(c) Circumference of circle=2πr=44cm
2r=44×7/22
2r=d=14cm
(d) Circumference of the circle =2πr=132
2r=132×7/22
r=21cm
area of the circle =πr^2=22/7×21×21=22×21×3
=1386cm^2