A right rectangular prism has a length of 5 cm, a width of 4 cm, and a height of 3 cm. The dimensions of the prism are doubled.
2 answers:
Answer:
The surface area of the enlarged prism is, 376 cm²
Step-by-step explanation:
Surface area of the prism(S) is given by:
where, l is the length , w is the width and h is the height of the prism receptively.
Given that:
A right rectangular prism has a length of 5 cm, a width of 4 cm, and a height of 3 cm.
⇒ l = 5 cm , w = 4 cm and h = 3 cm
Since, the dimensions of the prism are doubled
⇒
and
Substitute these in [1] we have;
Therefore, the surface area of the enlarged prism is, 376 cm²
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Answer:
Area of triangle is 25.
Step-by-step explanation:
We have been given an isosceles right triangle
Isosceles triangle is the triangle having two sides equal.
Figure is shown in attachment
By Pythagoras theorem
AD is altitude which divides the triangle into two parts
DC=5 implies BC =10 since D equally divides BC
Let AC=a implies AB=a being Isosceles
On substituting the values in the Pythagoras theorem:
WE can find area of right triangle by considering height AB and AD
Area of triangle ABC is:
(1)
And other method of area of triangle is:
(2)
Equating (1) and (2) we get:
Using area of triangle is:
Now, the area of triangle ABC=
Answer:
Hope this is correct
