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Norma-Jean [14]
4 years ago
14

Find the area (7cm, 20cm, 11 cm, 14 cm

Mathematics
2 answers:
Likurg_2 [28]4 years ago
8 0

ok ... so the way i solved this is by finding the correct side measurements ... so in this there are 2 rectangles ... so lets find the area of both rectangles individually and then add it together ... so the rectangle on the top will be <em><u>a</u></em><em> </em>and the down one will be <u><em>b </em></u>

rectangle a :

as we know ... a <u>rectangle has opposite sides equal . </u> the side on the right is 20 ... subtract it from 11 ... if we do that we get 9 ... which is the length of rectangle a and as the top is 7 bottom will be 7 too

now we know the sides of rectangle <u>a </u>which is 7 and 9

and area of rectangle : l × b , ∴ 7×9= 63

now b ... sides of rectangle b are 14 and 11

so 14×11= 154

now add it ... <u>154 + 63 = 217 </u>

∴ = 217 sq.




LenKa [72]4 years ago
3 0
A = 7*9 +11*14
=63 + 154
=217 cm^2
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