what is the answer to the area of a semi circle with a diameter of 3cm to 1 decimal place
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Answer:
i) R.E.F image
Area = Ar(rectangle)+Ar(semi-circle)
=(l×b)+(
2
πr
2
)
=(4×3)+(
2
3.14×2×2
)
=12+6.28
=18.28cm
2
ii) R.E.F image
Area = Area of big semicircle + Area of rectangle + Area of small semi-circle
=(
2
πR
2
)+(l×b)+(
2
πr
2
)
=(
2
3.14×2×2
)+(4×3)+(
2
3.14×1×1
)
=6.28+12+1.57
=19.85cm
2
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