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tishfaco5000
24.06.2019 •
Mathematics
Urgent me with this math question
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Ответ:
10.4 cm
Step-by-step explanation:
In this question apply the formulae for volume of a pyramid
General formulae for volume of a pyramid is = l*w*h /3 where l is base length, w is base width and h is height.
In this question l=w= 6cm, v=120 cm³ and h=? ,
Apply the formulae
Slant height
The length = 6cm-----------------divide by 2 to get half the legth
a=6/2=3cm
h=b= 10cm
c=?
apply the Pythagorean relationship
a²+b²=c²
3² + 10²= c²
9+100=c²
√109=c²
c=10.44
slant height =10.4 cm
Ответ:
Slant height of pyramid = 10.4 m
Step-by-step explanation:
Points to remember
Volume of square pyramid = a²h/3
Where 'a' is the side of base and h is the height of pyramid
To find the height of pyramid
It is given that volume of square pyramid = 120 cm³ and
base a = 6 cm
a²h/3 = 120
h = (120 * 3)/a²
= (120 * 3)/6²
=10 cm
Therefore h = 10 cm
To find the slant height of pyramid
By using Pythagorean theorem we can write,
slant height ² = (base/2)² + height²
l² = (a/2)² + h²
= (6/2)² + 10²
= 3² + 10²
= 9 + 100
=109
l = √109 = 10.44 ≈ 10.4
Ответ:
9000
Step-by-step explanation:
Harry's loan is initially $9000. This is before t months. His remaining debt will change this.