Question

5. In a Rhombus, length of the one diagonal is 6 cm, another diagonal is thrice the other.
Then its area is
(A) 14 cm
(B) 28 cm
(C) 22 cm
(D) 54cm
6. In a parallelogram the base is two times its height if the height is 5cm,then the area is
(A) 25sq.cm
(B) 10 sq.cm
(C) 50sq.cm
(D) 54sq. cm
7. Area of the parallelogram 64 sq. cm. If its hieght is 8 cm then base is
(A) 8cm
(B) 512cm
(C) 256cm
(D) 16cm​

Answer 1

Answer:

see this attachment

Step-by-step explanation:

I hope it's helpful to you

Answer 2

Step-by-step explanation:

5. 54 cm

area of a rhombus is equal to 1/2 d1 D2

where D1 and D2 are the diagonals of a rhombus

d 1 is equal to 6 CM

it is given that d2 is equal to 3 times D1

D2 = 3*6= 18 cm

therefore area of rhombus is equal to

1/2*6*18= 54 sq cm

6) 50 sq cm

area of parallelogram= BH

where b is equal to base

h is equal to height

base is 2 times the height

base=5*2= 10cm

therefore area =10. *5=50 sq cm

7) area=64sq cm

height = 8cm

so base=64/8=8cm

hope you understood