Since the square base has side 10 cm and triangular side has height 14 cm, the total surface area of square pyramid is 380 cm²
To answer the question, we need to find the total surface area of the square pyramid
Since a square pyramid has a square base and four triangular sides, its surface area, A = area of square base + 4 × Area of triangular side.
Area of square with side, L is A = L²
Area of triangle with height, h and base, L which is the length of the square base is A' = 1/2Lh
So, total surface area of square pyramid is A" = L² + 4 × 1/2Lh
= L² + 2Lh
Given that the length of the square base is 10 cm and the height of the triangular side is 14 cm.
We have that
So, substituting the values of the variables intot he equation, we have
A" = L² + 2Lh
A" = (10 cm)² + 2 × 10 cm × 14 cm
A" = 100 cm² + 280 cm²
A" = 380 cm²
So, the total surface area of square pyramid is 380 cm²
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Answer:
380 cm^2
Step-by-step explanation:
10*10=100(base square)
Each triangle= (14*10) /2=70
4 sides, so therefore: 70*4=280
280+100=380
The amount of soil dug out of well is 63.585 .
How to calculate the volume of cylinder?
Volume of Cylinder=
Given values: =3.14
r=0.9 m (d/2)
h=25 m
Volume:
=63.585
Therefore 63.585 cubic meters of soil was dug out.
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A. 3
B. 4
C. 5
D. 6
Answer:
1400
days
Explanation:
x
%
means
x
100
, if you are looking for
x
%
of a value
y
then it will be
x
100
⋅
y
Therefore...
4
%
of
y
(since we don't have a value, let's use that as a placeholder) is 56...
4
100
⋅
y
=
56
We can simplify the fraction to a decimal, this gets you
0.04
y
=
56
To find the value you need, simply divide
56
0.04
and you get the answer:
56
÷
0.04
=
1400
days