Answer: 13.8 m
Step-by-step explanation:
Given
From point A, angle of elevation is 
From point B which is 18 m closer, it changes to 
Suppose the height of tree is h
From figure, we can write
Similarly
Deduce the value of h
Thus, the height of the tree is 13.8 m
Answer:
Step-by-step explanation:
apply the indices law
- multiple means addition
- division means subtraction
- you are suppose to add the powers or subtract where necessary
- 4^9x 4^3= 4^5
- 6^5x6^2=6^7
- 8^6÷8=8^5
- 7^8÷7^6=7^2
The answer is 20 since 1/5 of 20 is 4, and 20 + 4 = 24.
Answer:
Step-by-step explanation:
36x⁴ /12x⁴ + 12x⁸ / 12x⁴
3x+x²
area of circle : πr²
area of sector : x/360 x πr²
firstly, you have to find. the area of a circle
π(6)² = 36π
then, find the area of the of the sector (not in the shape)
90°/360° x π(6)² = 12π
[90° is given)]
next, you just minus the total and the area of the sector.
36(3.14) - 12(3.14) = 75.36 units
