Question

(c) The base of a parallelogram is twice its altitude. If its area is 162 cm?, then its altitude
(i) 9 cm
(ii) 18 cm (iii) 12 cm (iv) 15 cm​

Answer 1

Answer:

the answer is 9cm.

Explanation:

given that,

area (A) of parallelogram is 162 cm.

Let the height of parallelogram be Xcm.

then base 2X cm.

Area of parallelogram 162cm.

2X x X = 162cm.

2X2 = 162

X2= 162/

X2= 81

X= 9cm.

Ans: 9cm.

Answer 2

Answer:

a) 9cm

Explanation:

(Base = let we take as 2y)

(height= let we take as y)

Area of Parallelogram= base × height ( height given as altitude in question)

area of Parallelogram= 2y × y 162cm² (given in question) = 2y²

162 ÷ 2. = y²

81 cm = y²

√81 = y

√9×9. = y

√9². = y

So, y = 9 cm

( I hope that it will help you )