9. The base and height of a triangle are in
the ratio 4: 5. If the area is 640 sq. cm,
find the base and height.
Answers
Answered by
23
Answer:
let required number be x
area of triangle is 1/2×base ×height
base=4x
height =5x
Step-by-step explanation:
1/2×4x ×5x =640
4x will divided by 2
2x×5x=640
10x²=640
x²=640/10
x²=64
taking square root
x=8
required number is 8
base =4x=4×8=32
height =5x=5×8=40
therefore base is 32cm and height is 40cm
Answered by
1
Step-by-step explanation:
let the number be x
area of traingle=1/2×base×height
base=4x
height=5x
1/2×base×height=640
1/2×4x×5x=640
(2 and 4 will be divided)
2x×5x=640
10x²=640
x²=640÷10
x²=64
(root)
x=8
base=4x=4×8=32
height=5x=5×8=40
Similar questions