A covered wooden box has the inner measures as 115 cm, 75 cm and 35 cm

1.	A covered wooden box has the inner measures as 115 cm, 75 cm and 35 cm and thickness of wood as 2.5 cm. The volume of the wood is(a) 85,000 cm3 (b) 80,000 cm3 (c) 82,125 cm3 (d) 84,000 cm3
Answer» The correct answer is option (c) 82,125 cm³ Explanation: The thickness of the wooden box is 2.5 cm Then the outer measure of the wooden box be 115+5, 75+5, 35+5 Thus, the outer volume be = (120)(80)(40) Outer volume = 384000 cm³ Given that, the inner volume = (115)(80)(40) Inner volume = 301875 cm³ Hence, the volume of a wood = Outer volume – Inner volume V = 384000 – 301875 cm³ V= 82125 cm³

A covered wooden box has the inner measures as 115 cm, 75 cm and 35 cm and thickness of wood as 2.5 cm. The volume of the wood is(a) 85,000 cm3 (b) 80,000 cm3 (c) 82,125 cm3 (d) 84,000 cm3

Answer»

The correct answer is option (c) 82,125 cm³

Explanation:

The thickness of the wooden box is 2.5 cm

Then the outer measure of the wooden box be 115+5, 75+5, 35+5

Thus, the outer volume be = (120)(80)(40)

Outer volume = 384000 cm³

Given that, the inner volume = (115)(80)(40)

Inner volume = 301875 cm³

Hence, the volume of a wood = Outer volume – Inner volume

V = 384000 – 301875 cm³

V= 82125 cm³