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# may you plz help me

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106
5

https://vle.mathswatch.co.uk/images/questions/question17882.png

https://vle.mathswatch.co.uk/images/questions/question15313.png

for the second one i did 7x4=21

40-21=19

now confused

Apr 22, 2020

#1
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1. 88

2. 55%

Apr 22, 2020
edited by MooMooooMooM  Apr 22, 2020
#2
+23524
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Side of square = side of rectangle = 6 cm

area of rectangle = 4/3 (36 ) = 48 cm^2      so length of rectangle = 8 cm

Perimeter =   8 (8cm) + 4 (6cm) = 88 cm

Apr 22, 2020
#3
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how did you get 55%

Guest Apr 22, 2020
#4
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You find the area of the two triangles then you subtract that from the whole since the area is 100 and that is yer percentage

MooMooooMooM  Apr 22, 2020
#5
+23524
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Side of the square is 10 cm   area = 10 x 10 = 100 cm2

Upper left triangle area = 1/2 bh = 1/2  3 x 10 = 15 cm^2

Lower right triangle area = 1/2 6 x 10 = 30 cm^2

Total UNshaded area = 45 cm^2

Then shaded area = 100 -45 = 55 cm^2    out of 100 cm^2    =   55 %

Apr 22, 2020