1. A cuboid has the dimensions 40 cm x 35 cm x
15 cm. Find (i) its surface area (ii) its volume.
Answers
Step-by-step explanation:
Given -
Length of Cuboid = 40cm
Breadth of cuboid = 35cm
Height of cuboid = 15cm
To find -
It's Surface area.
It's volume
Solution -
Surface area of cuboid = 2lb + bh +hl
Where,
L = Length
B = Breadth
H = Height
On substituting the values -
Surface area of cuboid = 2lb + bh + hl
→ Surface area = 2 (40 × 35) + (35 × 15) + (15 × 40)
→ Surface area = 2 (1400) + (525) + (600)
→ Surface area = 2 × 2525
→ Surface area = 5050 cm³
Volume of cuboid = L × B × H
Where,
L = Length
B = Breadth
H = Height
On substituting the values -
Volume of cuboid = L × B × H
→ Volume of cuboid = 40 × 35 × 15 cm
→ Volume of cuboid = 21,000 cm³
\therefore∴ The surface area of cuboid is 5050cm³ and volume of cuboid is 21,000cm³
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