Question

The base area of cone is38.5cm2.its volume is 77cm3.find its height

Answer 1

Answer:

6.07 cm

Step-by-step explanation:

as we know that volume or cone can be written as => 1/3pir²h

here we have to find out h =?

but v = 77cm²

and area of base is 38 cm²

now Area of circle is = pir²

38 = 22/7 × r²

38 ×7/22 = r²

266/22 = r²

now

77 = 1/3×22/7× 266/22 ×h

h = 77×3×7/22× 22/266

H = 77×3×7/266

= 1617/266= 6.07 cm