-
Height of a prism–shaped part of a machine is 8 cm and its base is an isosceles triangle, whose each of the equal sides is 5 cm and remaining side is 6 cm. The volume of the part is
-
- 96 cu. cm
- 120 cu. cm
- 86 cu. cm
- 90 cu. cm
- 96 cu. cm
Correct Option: A
AB = AC = 5 cm.
BD = DC = 3 cm.
From ∆ABD,
AD = √AB² - BD² = √5² - 3² = √25 - 9
= √16 = 4 cm.
∴ Area of the base of prism = | × BC × AD | |
2 |
= | × 6 × 4 = 12 sq. cm. | |
2 |
∴ Volume of prism = Area of base × height = 12 × 8 = 96 cu. cm.