Simplify this equation. 4m(2mn - 8m) +3n (5n-6mn)Please help me and show working as well
1 answer:
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Answer:
I. Volume = 301.6 cm³ (to 1d.p)
II. CSA = 188.5 cm² (to 1d.p)
Step-by-step explanation:
<u>Given the following data;</u>
Height, h = 8cm
Radius, r = 6cm
Curved length = 10cm
a. To find the volume of the cone
Where;
- V is the volume of the cone.
- r is the radius of the base of the cone.
- h is the height of the cone.
Substituting into the equation, we have;
<em>Volume = 301.6 cm³</em><em> </em>(to 1d.p)
b. The curved surface area of the cone
Where;
- CSA is the curved surface area of the cone.
- r is the radius of the base of the cone.
- l is the curved length of the cone.
Substituting into the equation, we have;
<em>CSA = 188.5 cm²</em> (to 1d.p)
We can add the fractions together to compare with how much sugar she needs.
So Juvi has cups of sugar.
She needs cups, so let's make the denominators the same and compare.
Since >
, she has enough sugar to make 4 batches of brownies.
Hope this helps.
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