Question

5. A rectangle and a parallelogram are drawn between the same parallel lines on a common base of 10 cm. If the
perimeter of rectangle is 36 cm, the area of the parallelogram is
(b) 75 cm?
(C) 80 cm?
(d) 85 cm?
(a) 70 cm? And tell me how?​

Answer 1

Answer:

80cm

Step-by-step explanation:

base is 10 cm

rectangles base will also be 10 cm(because same base)

so

perimeter=36 cm

2(l+b)=36

2(10+b)=36

10+b=36/2

b=18-10

b=8

So area of rectangle=8 x 10=80cm^2

area of parallelogram=area of rectangle (because they are on same base and lie between the same parallel)

area of parallelogram=80cm^2