Question

1.
The mean of the following distribution is 31.87. Find the value of a.
X
12
8
20
16
f
27
48
33
90
a+2
30
54
8​

Answer 1

Step-by-step explanation:

the external dimensions of an open iron box 32cm 22 cm and 16 cm

if the thickness of iron is 1 cm find the volume of the iron used