Answer: See explanation
Explanation:
I've attached the mathematics question that you posted.
The first picture is a cone. The surface area of a cone is:
= πrl + πr²
where,
π = 3.14
r = diameter/2 = 9m/2 = 4.5m
l = 13m
Surface area = πrl + πr²
= (3.14 × 4.5 × 13) + (3.14 × 4.5²)
= 183.69 + 63.585
= 247.275m²
The second picture is a hemisphere.
Volume of a hemisphere = 2/3πr³
= 2/3 × 3.14 × 3³
= 2/3 × 3.14 × 27
= 56.52km³
Surface area of a hemisphere = 3πr²
= 3 × 3.14 × 3²
= 3 × 3.14 × 9
= 84.78km²
