Advertisements
Advertisements
प्रश्न
Find the Total Surface Area and the Lateral Surface Area of a cuboid whose dimensions are: length = 20 cm, breadth = 15 cm, height = 8 cm
Advertisements
उत्तर
Here l = 20 cm, b = 15 cm, h = 8 cm
L.S.A of the cuboid = 2(l + b)h sq.m
= 2(20 + 15) × 8
= 2 × 35 × 8
= 560 sq.m2
Total surface area of the cuboid = 2(lb + bh + lh) sq.units
= 2(20 × 15 + 15 × 8 + 8 × 20) sq. cm
= 2(300 + 120 + 160) sq. cm
= 2 × 580 sq. cm
= 1160 sq. cm2
APPEARS IN
संबंधित प्रश्न
A closed iron tank 12 m long, 9 m wide and 4 m deep is to be made. Determine the cost of iron sheet used at the rate of Rs. 5 per metre sheet, sheet being 2 m wide.
A milk container is 8 cm long and 50 cm wide. What should be its height so that it can hold 4 litres of milk?
A cuboidal wooden block contains 36 cm3 wood. If it be 4 cm long and 3 cm wide, find its height.
An ice-cream brick measures 20 cm by 10 cm by 7 cm. How many such bricks can be stored in deep fridge whose inner dimensions are 100 cm by 50 cm by 42 cm?
How many soap cakes can be placed in a box of size 56 cm × 0.4 m × 0.25 m, if the size of a soap cake is 7 cm × 5 cm × 2.5 cm?
What will be the height of a cuboid of volume 168 m3, if the area of its base is 28 m2?
A water tank is 3 m long, 2 m broad and 1 m deep. How many litres of water can it hold?
The perimeter of a floor of a room is 30 m and its height is 3 m. Find the area of four walls of the room.
The total surface area of a cuboid is 46m2. If its height is 1m and breadth 3m, find its length and volume.
