#### Answer

$3m^{3}+30m^2$

#### Work Step by Step

We start with the given expression: $(3m^2)(m+10)$
We apply the distributive property to multiply the monomial by the binomial: $(3m^2)(m)+10(3m^2)$
We multiply the coefficients and add the exponents on each term to arrive at our answer: $$3m^{2+1}+30m^2$$$$3m^{3}+30m^2$$