Question

using suitable formula find the LSA TSA and volume of the figure.

cuboid l=15cm, b=20cm , h=34cm.

Answer 1

Answer:

LSA (lateral surface area) = 2,388 cm²

TSA (total surface area) = 2,980 cm²

Volume = 10,200 cm³

Step-by-step explanation:

Given :

• Length of cuboid (l) = 15 cm

• Breadth of cuboid (b) = 20 cm

• Height of cuboid (h) = 34 cm

To Find :

• The LSA

• The TSA

• Volume

Solution :

★ LSA (lateral surface area):

⇒ 2 ( lh + bh)

⇒ 2 (15 × 34 + 20 × 34)

⇒ 2,388

LSA (lateral surface area) = 2,388 cm²

$\rule{300}{1.5}$

★ TSA (total surface area) :

⇒ 2 (bh + lh + lb)

⇒ 2 ( 20 × 34 + 15 × 34 + 15 × 20)

⇒ 2 ( 680 + 510 + 300)

⇒ 2 (1490)

⇒ 2,980

TSA (total surface area) = 2,980 cm²

$\rule{300}{1.5}$

★ Volume :

⇒ (l b h)

⇒ 15 × 20 × 34

⇒ 10,200

Volume = 10,200 cm³

Therefore,

LSA (lateral surface area) = 2,388 cm²

TSA (total surface area) = 2,980 cm²

Volume = 10,200 cm³

Answer 2

Solution :

LSA = 2(LH + BH)

= 2 (15 × 34 + 20 × 34)

= 2388

TSA = 2(BH + LH + LB)

= 2(20 × 34 + 15 × 34 + 15 × 20)

= 2(680 + 510 + 300)

= 2980

Volume = L × B × H

= 15 × 20 × 34

= 10200

TSA = 2388 cm²

LSA = 2980 cm²

Volume = 10200 cm³