Tick (✓) the correct answer:
The area of the cardboard needed to make a box of size 25 cm × 15 cm × 8 cm will be
(a) 390 cm²
(b) 1390 cm²
(c) 2780 cm²
(d) 1000 cm²

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Solution

(b) $1390 c m^{2}$

Surface area $= 2 (25 \times 15 + 15 \times 8 + 25 \times 8) = 2 (375 + 120 + 200) = 1390 c m^{2}$

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Similar questions

The area of the cardboard needed to make a box of size $25 c m \times 15 c m \times 8 c m$ will be

(a) $390 c m^{2}$

(b) $1390 c m^{2}$

(d) $1000 c m^{2}$

Q. Find the area of the cardboard required to make a closed box of length 25 cm, 0.5 m and height 15 cm.

Shanti Sweets Stall was placing an order for making cardboard boxes for packing their sweets. Two sizes of boxes were required. The bigger of dimensions $25 c m \times 20 c m$ $\times 5 c m$ and the smaller of dimensions $15 c m \times 12 c m \times 5 c m$ . For all the overlaps, $5 %$ of the total surface area is required extra. If the cost of the cardboard is $R s . 4$ for $1000 {c m}^{2}$ , find the cost of the cardboard required for supplying $250$ boxes of each kind.

Q. Shanti sweets stall was placing an order for making cardboard boxes for packing their sweets. Two sizes of boxes were required. The bigger of dimensions

25 c m \times 20 c m \times 5 c m

cm and the smaller of dimensions

15 c m \times 12 c m \times 5 c m

cm.For all the overlaps,

5

% of the total surface area is required extra. If the cost of the cardboard is

4

for

1000 c m^{2}

. find the cost of cardboard required for supplying

250

boxes of each kind.

Find the total surface area of a closed cardboard box of length 0.5 m ,breadth 25cm and height 15cm

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Tick (✓) the correct answer: The area of the cardboard needed to make a box of size 25 cm × 15 cm × 8 cm will be (a) 390 cm2 (b) 1390 cm2 (c) 2780 cm2 (d) 1000 cm2

(b) 1390 cm2 Surface area=2(25×15+15×8+25×8)=2(375+120+200)=1390 cm2

Tick (✓) the correct answer:
The area of the cardboard needed to make a box of size 25 cm × 15 cm × 8 cm will be
(a) 390 cm²
(b) 1390 cm²
(c) 2780 cm²
(d) 1000 cm²

(b) $1390 c m^{2}$

Surface area $= 2 (25 \times 15 + 15 \times 8 + 25 \times 8) = 2 (375 + 120 + 200) = 1390 c m^{2}$