Question

2.
3.
4.
Find the sur
943.5m, breadth=30dm and height = 240cm
Find the surface area of the cube whose edge is given below.
(a) 1.5 m
(b) 26 cm
(c) 3.2cm
(d) 6 cm
A cuboidal box is 4 cm by 3 cm by 5 cm. Find its surface area.
Find the surface area of a cube whose volume is 216 cm
The dimensions of a
nsions of a cuboid are in the ratio 5:3:1 and is total surface area is
dimensions.
A tank 12 m by 5 m is to be made. It is open at the top.
12.00 per metre. if the sheet is 4 m wide.
A swimming pool is 20 m
mning pool is 20 m long 15 m wide and 4 m deep. Find the cost of repairing its too
wall @ 5.25 per square metre.
5.
:1 and is total surface area is 414 m2. Find the
made. It is open at the top. Find the cost of iron sheet, at the rate of
7.
8.
A cuboid has total surface area of 50 m² and lateral surface area is 30 m. Find the area ons base
POINTS TO REMEMBER
o Area is the measurement of the region enclosed by a figure.
O Area is the measured in square units viz.cm", m', km', etc.
o Area of a rectangle = length xbreadth
o Area of square = Sidex Side
o Some standard unit of conversions:
100 mm (b) 1 m² = 10,000 cm² (c) 1 dm² = 100 cm
f) 1 km2 = 10,00,000m²​

Answer 1

Question

A cuboidal box is 4 cm by 3 cm by 5 cm. Find its surface area.

Step-by-step explanation:

Surface area of cuboid = 2(l×h+b×h+l×b)

=2(4×5+3×5+4×3)

=2(20+15+12)

=2×47

=94 cm square