40 cm (c) 14 cm 10 cm 25 cm 8 cm
find tha area of shaded region
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Answers
Answered by
0
Answer:
We have,
Area of ring =π(R
2
−r
2
)
=π×(14
2
−7
2
)
=462cm
2
Area of the region ABDC
=Area of sector AOC-Area of sector BOD
=(
360
40
×
7
22
×14×14−
360
40
×
7
22
×7×7)cm
2
=(
9
1
×22×14×2
9
1
×22×7×1)cm
2
=
9
22
×(28−7)cm
2
=
3
154
cm
2
Hence, Required shaded area
=(462−
3
154
)cm
2
=
3
1232
cm
2
=410.67cm
2
verified_toppr
Answered by
2
Answer:
763 m^2
Step-by-step explanation:
Area of the whole rectangle = 40 * 25 = 1000 cm^2
Area of triangle = 1/2 * b * h = 1/2 * 10 * 25 = 125 cm^2
Area of the rectangular portion cut out = 14 * 8 = 112 cm^2
Area of shaded portion = 1000 - ( 125 + 112 ) = 763 cm^2
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