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

Guest Apr 22, 2020

#2**+1 **

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

ElectricPavlov Apr 22, 2020

#4**0 **

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**+2 **

Side of the square is 10 cm area = 10 x 10 = 100 cm^{2 }

^{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 %}

ElectricPavlov Apr 22, 2020