Question

The height of a triangular prism is 10cm. The sides
of the base
8cm, 4cm , 5cm. Phen P.S.A is​

Answer 1

Answer:

Given:

Height of triangular prism = 10 cm

Sides of base = 3, 4, 5 cm

To find:

Total surface area of prism = ?

Solution:

First of all, let us have a look at the formula for Total Surface Area of triangular prism:

TSA = B + p\times hTSA=B+p×h

Where B is the area of base

p is the perimeter of base and

h is the height of prism.

here base is a right angled triangle (because 3, 4, 5 is a triplet) Base and Height will be 3 , 4 cm or 4, 3 cm and 5 will be hypotenuse.

So formula for B:

\begin{gathered}B = \dfrac{1}{2}\times Base \times Height\\B = \dfrac{1}{2}\times 3\times 4 = 6 cm^2\end{gathered}

B=

2

1

×Base×Height

B=

2

1

×3×4=6cm

2

So, TSA = 6 + (3+4+5) \times× 10 = 6 + 120 = 126 cm^2cm

2

So, total surface area of given prism is 126cm^2cm

2

.

Answer 2

Answer:

Frequency is the number of occurrences of a repeating event per unit of time. It is also referred to as temporal frequency, which emphasizes the contrast to spatial frequency and angular frequency. Frequency is measured in units of hertz which is equal to one occurrence of a repeating event per second