Question

show solution for 1 and 2nd questions

Answer 1

Answer:

a)25cm and b) 30cm

Step-by-step explanation:

a)5+6+8+6=25cm

b)3+4+2+2+2+4+3+10=30cm

Answer 2

EXPLANATION

1)

a)

? = 6cm

because the opposite side of the ? is 6cm

and the total perimeter

=(6+6)+8+5

=12+8+5

=20+5

=25

total perimeter

= 25 cm

b)

the ? is on up so we will see of down because the opposite side of up=down

we will see horizontal lines of down because the line of ? is horizontal

the cm on the horizontal lines in the down are

4cm 2cm 4cm

so

?=4+2+4

?=6+4

?=10

and the total perimeter

=(2+2)+(3+3)+(4+4)+2+10

=4+6+8+2+10

=10+8+2+10

=18+2+10

=20+10

=30

total perimeter

= 30 cm

2)

a)

we will find the area whole rectangle first

=Length×Width=Area

=L×W=A

=12×10=A

=120=A

we will find the area of the blank rectangle

=L×W=A

=7×2=A

=14=A

area of whole rectangle - area of blank rectangle = area of shaded rectangle

=120-14=area of shaded rectangle

=106=area of shaded rectangle

b)

same step

14×9=Area

126=area

5×5=Area

25=area

=126-25=shaded region

=101= shaded region

FINAL ANSWERS

1.)

a) ?=6cm

total perimeter = 25cm

b)?=10 cm

total perimeter =30 cm

2)

a)

area of whole rectangle is 120

area of blank rectangle is 14

area of shaded region is 106

b)

area of whole rectangle is 126

area of blank rectangle is 25

area of shaded region is 101

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