Q. The area of triangle is 216cm3 and its sides are in ratio 3:4:5. The perimeter of the triangle is?

6cm
12cm
72cm
36cm
✅ The correct answer is c. 72cm.

Q. Change the voice: You seem to have made a mistake.

A mistake had been made by you.
A mistake seems to have been made by you.
A mistake is being made by you.
A mistake had made by you.
✅ The correct answer is b. A mistake seems to have been made by you..

Q. If x:y = 6, 5z_y=9:25 then what is ratio of x:z?

50:33
10:3
48:25
54:125
✅ The correct answer is b. 10:3.